Indonesian is one scion). This would extend the reach to the Maritime Southeast Asia, including Indonesia, but also other nations with a common language such as Malaysia and Brunei, as well as population within other nations such as the Malay people living in Singapore. There are also works written in and about Indonesia in unrelated languages. There are several languages and several distinct but related literary traditions within the geographical boundaries of the modern nation of Indonesia. For example, the island of Java has its own Javanese pre-national cultural and literary history. There are also Sundanese, Balinese, and Batak or Madurese traditions. Indonesia also has a colonial history of Dutch, British and Japanese occupation, as well as a history of Islamic influence that brought its own texts, linguistic and literary influences. There is also an oral literature tradition in the area. The term "Indonesian literature" is used in this article to refer to Indonesian as written in the nation of Indonesia, but also covers literature written in an earlier form of the Indonesian language i.e. Malay written in the Dutch East Indies. Religion Indonesia is constitutionally a secular state and the first principle of Indonesia's philosophical foundation, Pancasila, is "belief in the one and only God". A number of different religions are practised in the country, and their collective influence on the country's political, economic and cultural life is significant. The Indonesian Constitution guarantees freedom of religion. However, the government recognises only six official religions (Islam, Protestantism, Catholicism, Hinduism, Buddhism and Confucianism). Although based on data collected by the Indonesian Conference on Religion and Peace (ICRP), there are about 245 non-official religions in Indonesia. Indonesian law requires that every Indonesian citizen hold an identity card that identifies that person with one of these six religions, although citizens may fill in 'believer' on that section in case that person adhere to other religion than six recognized religion or leave that section blank. Indonesia does not recognise agnosticism or atheism, and blasphemy is illegal. Indonesia has the world's largest Muslim population In the 2018 Indonesian census, 86.7% of Indonesians identified themselves as Muslim (with Sunnis forming about 99%, Shias 1%, Ahmadis 0.2%), 7.6% Protestant, 3.12% Catholic, 1.74% Hindu, 0.77% Buddhist, 0.03% Confucianism, and 0.04% other religions/ No religion. Indonesia's political leadership has played an important role in the relations between groups, both positively and negatively, promoting mutual respect by affirming Pancasila but