Indonesia. Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian and Pacific oceans. Indonesia consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and various parts of Borneo and New Guinea. Indonesia is the world's largest archipelagic state and the 14th-largest country by area, at 1,904,569 square kilometres (735,358 square miles). With a population over 280 million people, Indonesia is the world's fourth-most-populous country and the most populous Muslim-majority country. Java, the world's most populous island, is home to more than half of the country's entire population. Indonesia is a presidential republic with an elected legislature. It has 38 provinces, of which nine have special autonomous status. The country's largest city, Jakarta, is the world's second-most-populous urban area. Indonesia shares land borders with Papua New Guinea, East Timor, and the eastern...