officially the 
Republic of Indonesia (
Indonesian: 
Republik Indonesia), is a country in 
Southeast Asia and 
Oceania. Indonesia comprises 
17,508 islands. With over 238 million people, it is the world's fourth 
most populous country, and has the world's largest 
population of Muslims. Indonesia is a 
republic, with an elected legislature and president. The nation's capital city is 
Jakarta. The country shares land borders with 
Papua New Guinea, 
East Timor, and 
Malaysia. Other neighboring countries include 
Singapore, 
Philippines, 
Australia, and the Indian territory of the 
Andaman and Nicobar Islands. Indonesia is a founding member of 
ASEAN and a member of the 
G-20 major economies. The 
Indonesian economy is the world's 
eighteenth largest economy by nominal 
GDP and 
fifteenth largest by 
purchasing power parity. 
The Indonesian archipelago has been an important trade region since at least the 7th century, when 
Srivijaya and then later 
Majapahit traded with 
China and 
India. Local rulers gradually absorbed foreign cultural, religious and political models from the early centuries 
CE, and 
Hindu and 
Buddhist  kingdoms flourished. Indonesian history has been influenced by foreign  powers drawn to its natural resources. Muslim traders brought 
Islam, and European powers brought 
Christianity and fought one another to monopolize trade in the Spice Islands of 
Maluku during the 
Age of Discovery. Following three and a half centuries of 
Dutch colonialism, Indonesia secured 
its independence  after World War II. Indonesia's history has since been turbulent, with  challenges posed by natural disasters, corruption, separatism, 
a democratization process, and periods of rapid economic change. The current nation of Indonesia is a 
unitary presidential republic consisting of 
thirty three provinces.
Across its many islands, Indonesia consists of distinct ethnic, linguistic, and religious groups. The 
Javanese  are the largest—and the politically dominant—ethnic group. Indonesia  has developed a shared identity defined by a national language, ethnic  diversity, religious pluralism within a majority Muslim population, and a  history of colonialism including rebellion against it. Indonesia's  national motto, 
"Bhinneka Tunggal Ika" ("Unity in Diversity" 
literally,  "many, yet one"), articulates the diversity that shapes the country.  Despite its large population and densely populated regions, Indonesia  has vast areas of wilderness that support the world's second highest  level of 
biodiversity. The country is richly endowed with natural resources, yet poverty remains widespread in contemporary Indonesia.
[6]
Etymology
The name 
Indonesia derives from the Latin 
Indus, and the Greek 
nesos, meaning "island".
[7] The name dates to the 18th century, far predating the formation of independent Indonesia.
[8] In 1850, 
George Windsor Earl, an English 
ethnologist, proposed the terms 
Indunesians — and, his preference, 
Malayunesians — for the inhabitants of the "Indian Archipelago or Malayan Archipelago".
[9] In the same publication, a student of Earl's, 
James Richardson Logan, used 
Indonesia as a synonym for 
Indian Archipelago.
[10] However, Dutch academics writing in East Indies publications were reluctant to use 
Indonesia. Instead, they used the terms 
Malay Archipelago (
Maleische Archipel); the 
Netherlands East Indies (
Nederlandsch Oost Indië), popularly 
Indië; 
the East (
de Oost); and even 
Insulinde.
[11]
From 1900, the name 
Indonesia became more common in academic  circles outside the Netherlands, and Indonesian nationalist groups  adopted it for political expression.
[12] Adolf Bastian, of the University of Berlin, popularized the name through his book 
Indonesien oder die Inseln des Malayischen Archipels, 1884–1894. The first Indonesian scholar to use the name was 
Suwardi Suryaningrat (Ki Hajar Dewantara), when he established a press bureau in the Netherlands with the name 
Indonesisch Pers-bureau in 1913.
[8]
History
 
  Picture: a 
ship carved on 
Borobudur,  circa 800 CE. Indonesian outrigger boats may have made trade voyages to  the east coast of Africa as early as the first century CE.
[13]  Fossilized remains of 
Homo erectus, popularly known as the "
Java Man", suggest that the Indonesian archipelago was inhabited two million to 500,000 years ago.
[14] Homo sapiens reached the region by around 45,000 years ago.
[15] Austronesian peoples,  who form the majority of the modern population, migrated to South East  Asia from Taiwan. They arrived in Indonesia around 2000 
BCE, and as they spread through the archipelago, confined the native 
Melanesian peoples to the far eastern regions.
[16] Ideal agricultural conditions, and the mastering of 
wet-field rice cultivation as early as the 8th century BCE,
[17]  allowed villages, towns, and small kingdoms to flourish by the 1st  century CE. Indonesia's strategic sea-lane position fostered  inter-island and international trade, including links with Indian  kingdoms and China, which were established several centuries BCE.
[18] Trade has since fundamentally shaped Indonesian history.
[19]
 
  The 
nutmeg plant is native to Indonesia's 
Banda Islands. Once one of the world's most valuable commodities, it drew the first European colonial powers to Indonesia.
  From the 7th century CE, the powerful 
Srivijaya naval kingdom flourished as a result of trade and the influences of 
Hinduism and 
Buddhism that were imported with it.
[20] Between the eighth and 10th centuries CE, the agricultural Buddhist 
Sailendra and Hindu 
Mataram dynasties thrived and declined in inland Java, leaving grand religious monuments such as Sailendra's 
Borobudur and Mataram's 
Prambanan. The Hindu 
Majapahit kingdom was founded in eastern Java in the late 13th century, and under 
Gajah Mada, its influence stretched over much of Indonesia.
[21]
Although Muslim traders first traveled through South East Asia early in the Islamic era, the 
earliest evidence of Islamized populations in Indonesia dates to the 13th century in northern 
Sumatra.
[22]  Other Indonesian areas gradually adopted Islam, and it was the dominant  religion in Java and Sumatra by the end of the 16th century. For the  most part, Islam overlaid and mixed with existing cultural and religious  influences, which shaped the predominant form of Islam in Indonesia,  particularly in Java.
[23] The first Europeans arrived in Indonesia in 1512, when Portuguese traders, led by 
Francisco Serrão, sought to monopolize the sources of nutmeg, 
cloves, and 
cubeb pepper in Maluku.
[24] Dutch and British traders followed. In 1602 the Dutch established the 
Dutch East India Company  (VOC) and became the dominant European power. Following bankruptcy, the  VOC was formally dissolved in 1800, and the government of the  Netherlands established the 
Dutch East Indies as a nationalized colony.
[25]
For most of 
the colonial period,  Dutch control over the archipelago was tenuous outside of coastal  strongholds; only in the early 20th century did Dutch dominance extend  to what was to become Indonesia's current boundaries.
[26] Japanese occupation during World War II ended Dutch rule,
[27] and encouraged the previously suppressed Indonesian independence movement.
[28] Two days after the surrender of Japan in August 1945, 
Sukarno, an influential nationalist leader, declared independence and was appointed president.
[29] The Netherlands tried to reestablish their rule, and 
an armed and diplomatic struggle ended in December 1949, when in the face of international pressure, the Dutch formally recognized Indonesian independence
[30] (with the exception of 
the Dutch territory of West New Guinea, which was incorporated into Indonesia following the 1962 
New York Agreement, and the UN-mandated 
Act of Free Choice of 1969).
[31]
 
  Sukarno, Indonesia's founding president
  Sukarno moved from democracy towards authoritarianism, and maintained his power base by balancing the opposing forces of the 
military and the 
Communist Party of Indonesia (PKI).
[32] An attempted coup on 30 September 1965 was countered by the army, who led 
a violent anti-communist purge, during which the PKI was blamed for the coup and effectively destroyed.
[33] Between 500,000 and one million people were killed.
[34] The head of the military, 
General Suharto, out-maneuvered the politically weakened Sukarno, and was formally appointed president in March 1968. His 
New Order administration[35] was supported by the US government,
[36] and encouraged 
foreign direct investment in Indonesia, which was a major factor in the subsequent three decades of substantial economic growth.
[37] However, the authoritarian "New Order" was widely accused of corruption and suppression of political opposition.
Indonesia was the country hardest hit by the 
late 1990s Asian Financial Crisis.
[38] This increased popular discontent with the New Order and led to 
popular protest across the country. Suharto resigned on 21 May 1998.
[39] In 1999, East Timor voted to secede from Indonesia, after 
a twenty-five-year military occupation that was marked by international condemnation of repression of the East Timorese.
[40] Since Suharto's resignation, 
a strengthening of democratic processes has included a regional autonomy program, and the first 
direct presidential election in 2004.  Political and economic instability, social unrest, corruption, and  terrorism slowed progress, however, in the last five years the economy  has performed strongly. Although relations among different religious and  ethnic groups are largely harmonious, sectarian discontent and violence  has occurred.
[41] A political settlement to an armed separatist conflict in 
Aceh was achieved in 2005.
[42]
Government and politics
Indonesia is a republic with a presidential system. As a unitary  state, power is concentrated in the central government. Following the 
resignation of President Suharto in 1998, Indonesian political and governmental structures have undergone major reforms. Four amendments to the 
1945 Constitution of Indonesia[43] have revamped the 
executive, 
judicial, and 
legislative branches.
[44] The president of Indonesia is the head of state, commander-in-chief of the 
Indonesian National Armed Forces,  and the director of domestic governance, policy-making, and foreign  affairs. The president appoints a council of ministers, who are not  required to be elected members of the legislature. The 2004 presidential  election was the first in which the people directly elected the  president and vice president.
[45] The president may serve a maximum of two consecutive five-year terms.
[46]
 
  A session of the People's Representative Council in Jakarta
  The highest representative body at national level is the 
People's Consultative Assembly  (MPR). Its main functions are supporting and amending the constitution,  inaugurating the president, and formalizing broad outlines of state  policy. It has the power to impeach the president.
[47] The MPR comprises two houses; the 
People's Representative Council (DPR), with 560 members, and the 
Regional Representative Council (DPD), with 132 members.
[48] The DPR passes legislation and monitors the executive branch; party-aligned members are elected for five-year terms by 
proportional representation.
[44] Reforms since 1998 have markedly increased the DPR's role in national governance.
[49] The DPD is a new chamber for matters of regional management.
[50]
Most civil disputes appear before a State Court (Pengadilan Negeri);  appeals are heard before the High Court (Pengadilan Tinggi). The Supreme  Court (Mahkamah Agung) is the country's highest court, and hears final  cessation appeals and conducts case reviews. Other courts include the  Commercial Court, which handles bankruptcy and insolvency; a State  Administrative Court (Pengadilan Tata Negara) to hear administrative law  cases against the government; a Constitutional Court (Mahkamah  Konstitusi) to hear disputes concerning legality of law, general  elections, dissolution of political parties, and the scope of authority  of state institutions; and a Religious Court (Pengadilan Agama) to deal  with codified Sharia Law cases.
[51]
Foreign relations and military
In contrast to Sukarno's anti-imperialistic antipathy to western powers and 
tensions with Malaysia, 
Indonesia's foreign relations since the Suharto "New Order" have been based on economic and political cooperation with Western nations.
[52] Indonesia maintains close relationships with its neighbors in Asia, and is a founding member of 
ASEAN and the 
East Asia Summit.
[48]  The nation restored relations with the People's Republic of China in  1990 following a freeze in place since anti-communist purges early in  the Suharto era.
[51] Indonesia has been a member of the United Nations since 1950,
[53] and was a founder of the 
Non-Aligned Movement (NAM) and the 
Organisation of the Islamic Conference (OIC).
[48] Indonesia is signatory to the 
ASEAN Free Trade Area agreement, the 
Cairns Group, and the 
WTO, and has historically been a member of 
OPEC,  although it withdrew in 2008 as it was no longer a net exporter of oil.  Indonesia has received humanitarian and development aid since 1966, in  particular from the United States, western Europe, Australia, and Japan.
[48]
The Indonesian Government has worked with other countries to  apprehend and prosecute perpetrators of major bombings linked to  militant 
Islamism and 
Al-Qaeda.
[54] The deadliest killed 202 people (including 164 international tourists) in the 
Bali resort town of 
Kuta in 2002.
[55] The attacks, and subsequent travel warnings issued by other countries, severely damaged Indonesia's 
tourism industry and foreign investment prospects.
[56]
Indonesia's 300,000-member armed forces (TNI) include the Army (TNI–AD), 
Navy (TNI–AL, which includes marines), and Air Force (TNI–AU).
[57]  The army has about 233,000 active-duty personnel. Defense spending in  the national budget was 4% of GDP in 2006, and is controversially  supplemented by revenue from military commercial interests and  foundations.
[58]  One of the reforms following the 1998 resignation of Suharto was the  removal of formal TNI representation in parliament; nevertheless, its  political influence remains extensive.
[59]
Separatist movements in the provinces of Aceh and Papua have led to  armed conflict, and subsequent allegations of human rights abuses and  brutality from all sides.
[60] Following a sporadic thirty-year guerrilla war between the 
Free Aceh Movement (GAM) and the Indonesian military, a ceasefire agreement was reached in 2005.
[61]  In Papua, there has been a significant, albeit imperfect,  implementation of regional autonomy laws, and a reported decline in the  levels of violence and 
human rights abuses, since the presidency of Susilo Bambang Yudhoyono.
[62]
Administrative divisions
Administratively, Indonesia consists of 33 provinces, five of which  have special status. Each province has its own political legislature and  governor. The provinces are subdivided into regencies (
kabupaten) and cities (
kota), which are further subdivided into districts (
kecamatan), and again into 
village groupings (either 
desa or 
kelurahan).  Furthermore, a village is divided into several citizen-groups  (Rukun-Warga (RW)) which are further divided into several  neighbourhood-groups (Rukun-Tetangga (RT)). Following the implementation  of regional autonomy measures in 2001, the regencies and cities have  become the key administrative units, responsible for providing most  government services. The village administration level is the most  influential on a citizen's daily life, and handles matters of a village  or neighborhood through an elected 
lurah or 
kepala desa (village chief).
The provinces of Aceh, Jakarta, 
Yogyakarta, and 
West Papua  have greater legislative privileges and a higher degree of autonomy  from the central government than the other provinces. The Acehnese  government, for example, has the right to create an independent legal  system; in 2003, it instituted a form of 
Sharia (Islamic law).
[63]  Yogyakarta was granted the status of Special Region in recognition of  its pivotal role in supporting Indonesian Republicans during the  Indonesian Revolution.
[64] Papua, formerly known as Irian Jaya, now West Papua, was granted special autonomy status in 2001.
[65] Jakarta is the country's special capital region.
Indonesian provinces and their capitals – listed by region 
(Indonesian name in parentheses if different from English) 
† indicates provinces with Special Status
Geography
Indonesia lies between latitudes 
11°S and 
6°N, and longitudes 
95°E and 
141°E. It consists of 17,508 islands, about 6,000 of which are inhabited.
[66] These are scattered over both sides of the 
equator. The largest are Java, Sumatra, 
Borneo  (shared with Brunei and Malaysia), New Guinea (shared with Papua New  Guinea), and Sulawesi. Indonesia shares land borders with Malaysia on  Borneo, Papua New Guinea on the island of New Guinea, and East Timor on  the island of 
Timor.  Indonesia shares maritime borders across narrow straits with Singapore,  Malaysia, and the Philippines to the north, and with Australia to the  south. The capital, Jakarta, is on Java and is the nation's largest  city, followed by Surabaya, Bandung, Medan, and Semarang.
[67]
At 1,919,440 square kilometers (741,050 sq mi), Indonesia is the world's 
16th-largest country in terms of land area.
[68] Its average population density is 134 people per square kilometer (347 per sq mi), 79th in the world,
[69] although Java, the world's most populous island,
[70] has a population density of 940 people per square kilometer (2,435 per sq mi). At 4,884 metres (16,024 ft), 
Puncak Jaya in Papua is Indonesia's highest peak, and 
Lake Toba  in Sumatra its largest lake, with an area of 1,145 square kilometers  (442 sq mi). The country's largest rivers are in Kalimantan, and include  the 
Mahakam and 
Barito; such rivers are communication and transport links between the island's river settlements.
[71]
Indonesia's location on the edges of the 
Pacific, 
Eurasian, and 
Australian tectonic plates makes it the site of numerous 
volcanoes and frequent earthquakes. Indonesia has at least 150 active volcanoes,
[72] including 
Krakatoa and 
Tambora, both famous for their devastating eruptions in the 19th century. The eruption of the Toba 
supervolcano, approximately 70,000 years ago, was one of the largest eruptions ever, and a 
global catastrophe. Recent disasters due to seismic activity include the 
2004 tsunami that killed an estimated 167,736 in northern Sumatra,
[73] and the 
Yogyakarta earthquake in 2006. However, 
volcanic ash  is a major contributor to the high agricultural fertility that has  historically sustained the high population densities of Java and Bali.
[74]
 Lying along the equator, Indonesia has a 
tropical climate, with two distinct 
monsoonal wet and 
dry  seasons. Average annual rainfall in the lowlands varies from  1,780–3,175 millimeters (70–125 in), and up to 6,100 millimeters  (240 in) in mountainous regions. Mountainous areas—particularly in the  west coast of Sumatra, West Java, Kalimantan, Sulawesi, and  Papua—receive the highest rainfall. Humidity is generally high,  averaging about 80%. Temperatures vary little throughout the year; the  average daily temperature range of Jakarta is 26–30 °C (79–86 °F).
[75]
Biota and environment
Indonesia's size, tropical climate, and archipelagic geography,  support the world's second highest level of biodiversity (after Brazil),
[76] and its flora and fauna is a mixture of Asian and 
Australasian species.
[77] Once linked to the Asian mainland, the islands of the 
Sunda Shelf (Sumatra, Java, Borneo, and Bali) have a wealth of Asian fauna. Large species such as the 
tiger, 
rhinoceros, 
orangutan, 
elephant, and 
leopard,  were once abundant as far east as Bali, but numbers and distribution  have dwindled drastically. Forests cover approximately 60% of the  country.
[78]  In Sumatra and Kalimantan, these are predominantly of Asian species.  However, the forests of the smaller, and more densely populated Java,  have largely been removed for human habitation and agriculture.  Sulawesi, Nusa Tenggara, and Maluku—having been long separated from the  continental landmasses—have developed their own unique flora and fauna.
[79] Papua was part of the Australian landmass, and is home to a 
unique fauna and flora closely related to that of Australia, including over 600 bird species.
[80]
Indonesia is second only to Australia in terms of total endemic  species, with 36% of its 1,531 species of bird and 39% of its 515  species of mammal being endemic.
[81]  Indonesia's 80,000 kilometers (50,000 mi) of coastline are surrounded  by tropical seas that contribute to the country's high level of  biodiversity. Indonesia has a range of sea and coastal 
ecosystems, including beaches, 
sand dunes, 
estuaries, 
mangroves, 
coral reefs, 
sea grass beds, 
coastal mudflats, tidal flats, algal beds, and small island ecosystems.
[7] The British naturalist, 
Alfred Wallace, described a dividing line between the distribution and peace of Indonesia's Asian and Australasian species.
[82] Known as the 
Wallace Line, it runs roughly north-south along the edge of the Sunda Shelf, between Kalimantan and Sulawesi, and along the deep 
Lombok Strait, between 
Lombok  and Bali. West of the line the flora and fauna are more Asian; moving  east from Lombok, they are increasingly Australian. In his 1869 book, 
The Malay Archipelago, Wallace described numerous species unique to the area.
[83] The region of islands between his line and New Guinea is now termed 
Wallacea.
[82]
Indonesia's high population and rapid 
industrialization present serious 
environmental issues, which are often given a lower priority due to high poverty levels and weak, under-resourced governance.
[84] Issues include 
large-scale deforestation (much of it 
illegal) and related wildfires causing 
heavy smog  over parts of western Indonesia, Malaysia and Singapore;  over-exploitation of marine resources; and environmental problems  associated with rapid 
urbanization and 
economic development, including 
air pollution, 
traffic congestion, garbage management, and reliable water and 
waste water services.
[84] Deforestation and the destruction of peatlands make Indonesia the world's third largest emitter of greenhouse gases.
[85] Habitat destruction threatens the survival of indigenous and endemic species, including 140 species of 
mammals identified by the 
World Conservation Union (IUCN) as 
threatened, and 15 identified as critically endangered, including the Sumatran Orangutan.
[86]
Economy
 
  Using 
water buffalo to plough rice fields in Java. Agriculture has been the country's largest employer for centuries.
  Indonesia has a 
mixed economy in which both the private sector and government play significant roles.
[87] The country is the largest economy in 
Southeast Asia and a member of the 
G-20 major economies.
[88] Indonesia's estimated 
gross domestic product (nominal), as of 2009 was US$539.7 billion with estimated nominal 
per capita GDP was US$2,329, and per capita GDP PPP was US$4,157 (
international dollars).
[89]  The industry sector is the economy's largest and accounts for 47.6% of  GDP (2009). This is followed by services (37.1%) and agriculture  (15.3%).
[90]  However, as of 2005, agriculture remained employing more people than  other sectors, accounting for 44.3% of the 95 million-strong workforce,  this was followed by the services sector (36.9%) and industry (18.8%).
[91]
Indonesia's main export markets (2009) are Japan (17.28%), 
Singapore (11.29%), 
the United States (10.81%), and China (7.62%). The major suppliers of imports to Indonesia are Singapore (24.96%), 
China (12.52%), and 
Japan  (8.92%). In 2005, Indonesia ran a trade surplus with export revenues of  US$83.64 billion and import expenditure of US$62.02 billion. The  country has extensive natural resources, including crude oil, natural  gas, tin, copper, and gold. Indonesia's major imports include machinery  and equipment, chemicals, fuels, and foodstuffs. And the country's major  export commodities include oil and gas, electrical appliances, plywood,  rubber, and textiles.
[92]
 
  Jakarta, the capital of Indonesia and the country's largest commercial center.
  In the 1960s, the economy deteriorated drastically as a result of  political instability, a young and inexperienced government, and  economic nationalism, which resulted in severe poverty and hunger.
[93] Following President Sukarno's downfall in the mid-1960s, the New Order administration brought 
a degree of discipline to economic policy that quickly brought inflation down, stabilized the currency, rescheduled 
foreign debt, and attracted foreign aid and investment.
[94] (See 
Berkeley Mafia).  Indonesia was until recently Southeast Asia's only member of OPEC, and  the 1970s oil price raises provided an export revenue windfall that  contributed to sustained high economic growth rates.
[95] Following further reforms in the late 1980s,
[96] foreign investment flowed into Indonesia, particularly into the rapidly developing export-oriented 
manufacturing sector, and from 1989 to 1997, the Indonesian economy grew by an average of over 7%.
[97]
Indonesia was the country hardest hit by the 
Asian financial crisis of 1997–98. Against the US dollar, the 
rupiah dropped from about Rp. 2,600 to a low point of 14,000, and the economy shrank by 13.7%.
[98] The Rupiah stabilised in the Rp. 8,000 to 10,000 range,
[99]  and a slow but significant economic recovery has ensued. However,  political instability, slow economic reform, and corruption slowed the  recovery.
[6] Transparency International, for example, has since ranked Indonesia below 100 in its 
Corruption Perceptions Index.
[100][101] Nevertheless, GDP growth has been 5% annually since 2004.
[102] The Growth, however, was not enough to make a significant impact on unemployment.
[103]  Stagnant wages growth, increases in fuel and rice prices in 2005,  moreover, worsened poverty levels. As of 2006, an estimated 17.8% of the  population was living below the 
poverty line,  defined by the Indonesian government as purchasing power parity of  US$1.55 per day (household income), and nearly half of the population  was living on less than US$2 per day.
[104] Since 2007, GDP growth has averaged 6%,
[105] and the unemployment rate dropped to 7.7% in 2009.
[106] Unlike its neighbors, Indonesia was barely affected by the 2008 
global recession.
[107]  Driven by high domestic consumption, surplus balance of payment and  improving banking sector, the Indonesian economy grew by 6.2 per cent in  2010. Inflationary and regulatory weaknesses, however, remain problems.
[108][109][110]
Demographics
 
  Balinese children. There are around 300 distinct native ethnicities in Indonesia.
  The population of Indonesia according to the 2010 national census is 237.6 million,
[3] with population growth still high at 1.9 percent.
[111] 58% living on the island of 
Java,
[3] the world's most populous island.
[112] Despite a fairly effective 
family planning  program that has been in place since the 1960s, the population is  expected to grow to around 254 million by 2020 and 288 million by 2050.
[113]
Most Indonesians are descended from 
Austronesian-speaking  peoples whose languages can be traced to Proto Austronesian (PAn),  which possibly originated in Taiwan. Another major grouping are 
Melanesians, who inhabit eastern Indonesia.
[114] There are around 300 distinct native ethnicities in Indonesia, and 742 different languages and dialects.
[115] The largest ethnic group is the Javanese, who comprise 42% of the population, and are politically and culturally dominant.
[116] The 
Sundanese, ethnic 
Malays, and 
Madurese are the largest non-Javanese groups.
[117] A sense of Indonesian nationhood exists alongside strong regional identities.
[118] Society is largely harmonious, although social, religious and ethnic tensions have triggered horrendous violence.
[119] Chinese Indonesians are an influential ethnic minority comprising 3-4% of the population.
[120] Much of the country's privately owned commerce and wealth is Chinese-Indonesian-controlled,
[121] which has contributed to considerable resentment, and even anti-Chinese violence.
[122]
 
  The 
Istiqlal Mosque in Central Jakarta. Indonesia has the world's largest population of Muslims
  The official national language, 
Indonesian, a form of 
Malay,  is universally taught in schools, and consequently is spoken by nearly  every Indonesian. It is the language of business, politics, national  media, education, and academia. It is based on the 
prestige dialect of Malay, that of the 
Johor-Riau Sultanate, which for centuries had been the 
lingua franca  of the archipelago, standards of which are the official languages in  Singapore, Malaysia and Brunei. It was promoted by Indonesian  nationalists in the 1920s, and declared the 
official language under the name 
Bahasa Indonesia on the proclamation of independence in 1945. Most Indonesians speak at least one of the 
several hundred local languages and dialects, often as their 
first language. Of these, 
Javanese is the most widely spoken as the language of the largest ethnic group.
[123] On the other hand, Papua has over 270 indigenous 
Papuan and 
Austronesian languages,
[124]  in a region of about 2.7 million people. A significant fraction of the  people who attended school before independence can speak Dutch to some  extent.
[125]
Although religious freedom is stipulated in the Indonesian constitution,
[126][dead link] the government officially recognizes only six religions: 
Islam, Protestantism, Roman Catholicism, 
Hinduism, Buddhism, and 
Confucianism.
[127]  Although it is not an Islamic state, Indonesia is the world's most  populous Muslim-majority nation, with 86.1% of Indonesians were Muslim  according to the 2000 
census.
[123] 9% of the population was Christian, 3% Hindu, and 2% Buddhist or other. Most Indonesian Hindus are Balinese,
[128] and most Buddhists in modern-day Indonesia are ethnic Chinese.
[129] Though now minority religions, Hinduism and Buddhism remain defining influences in 
Indonesian culture.  Islam was first adopted by Indonesians in northern Sumatra in the 13th  century, through the influence of traders, and became the country's  dominant religion by the 16th century.
[130] Roman Catholicism was brought to Indonesia by early Portuguese colonialists and missionaries,
[131] and the Protestant denominations are largely a result of Dutch 
Calvinist and 
Lutheran missionary efforts during the country's colonial period.
[132] A large proportion of Indonesians—such as the Javanese 
abangan, Balinese Hindus, and Dayak Christians—practice a less 
orthodox, 
syncretic form of their religion, which draws on local customs and beliefs.
[133]
Culture
Indonesia has around 300 ethnic groups, each with cultural identities  developed over centuries, and influenced by Indian, Arabic, Chinese,  and European sources. Traditional Javanese and Balinese dances, for  example, contain aspects of Hindu culture and mythology, as do 
wayang kulit (shadow puppet) performances. Textiles such as 
batik, 
ikat and 
songket are created across Indonesia in styles that vary by region. The most dominant influences on 
Indonesian architecture have traditionally been 
Indian; however, Chinese, Arab, and European architectural influences have been significant.
Sports in Indonesia are generally male-orientated and spectator sports are often associated with illegal gambling.
[134] The most popular sports are 
badminton and 
football. 
Indonesian players have won the 
Thomas Cup  (the world team championship of men's badminton) thirteen of the  twenty-six times that it has been held since 1949, as well as numerous  Olympic medals since the sport gained full Olympic status in 1992. Its  women have won the 
Uber Cup, the female equivalent of the Thomas Cup, twice, in 
1994 and 
1996. 
Liga Indonesia is the country's premier football club league. Traditional sports include 
sepak takraw, and bull racing in Madura. In areas with a history of tribal warfare, mock fighting contests are held, such as, 
caci in 
Flores, and 
pasola in 
Sumba. 
Pencak Silat is an Indonesian martial art.
 
  A selection of Indonesian food, including roasted fish, 
nasi timbel (rice wrapped in banana leaf), 
sambal, fried 
tempeh and 
tofu, and 
sayur asem.
  Indonesian cuisine varies by region and is based on Chinese, European, Middle Eastern, and Indian precedents.
[135] Rice is the main 
staple food and is served with 
side dishes of meat and vegetables. Spices (notably chili), 
coconut milk, fish and chicken are fundamental ingredients.
[136] Indonesian traditional music includes 
gamelan and 
keroncong. 
Dangdut is a popular contemporary genre of pop music that draws influence from Arabic, Indian, and Malay folk music. The 
Indonesian film industry's popularity peaked in the 1980s and dominated cinemas in Indonesia,
[137] although it declined significantly in the early 1990s.
[138] Between 2000 and 2005, the number of Indonesian films released each year has steadily increased.
[137]
The oldest evidence of writing in Indonesia is a series of 
Sanskrit  inscriptions dated to the 5th century CE. Important figures in modern  Indonesian literature include: Dutch author Multatuli, who criticized  treatment of the Indonesians under Dutch colonial rule; Sumatrans 
Muhammad Yamin and 
Hamka, who were influential pre-independence nationalist writers and politicians;
[139] and proletarian writer 
Pramoedya Ananta Toer, Indonesia's most famous novelist.
[140] Many of Indonesia's peoples have strongly rooted 
oral traditions, which help to define and preserve their cultural identities.
[141]
Media  freedom in Indonesia increased considerably after the end of President  Suharto's rule, during which the now-defunct Ministry of Information  monitored and controlled domestic media, and restricted foreign media.
[142] The 
TV market includes ten national commercial networks, and provincial networks that compete with public 
TVRI.  Private radio stations carry their own news bulletins and foreign  broadcasters supply programs. At a reported 25 million users in 2008,
[143] Internet usage was estimated at 12.5% in September 2009.
[144]
More than 30 million cell phones are sold in Indonesia each year, and 27 percent of them are local brands.
[145]
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