Southeast Asian and Oceanian nation, Indonesia, formally known as the Republic of Indonesia, is situated between the Indian and Pacific seas. It is made up of more than 17,000 islands, some of which are in Borneo and New Guinea, as well as Sumatra, Java, and Sulawesi. With an area of 1,904,569 square kilometers, Indonesia is the largest archipelagic state in the world and the fourteenth largest nation by land area (735,358 square miles). Indonesia is the most populated country with a majority of Muslims, home to approximately 280 million people, making it the fourth most populous country in the world. Over half of the nation’s population resides in Java, the most populous island in the world.