which of these countries is part of insular southeast asia
The insular region of Southeast Asia includes the countries of Malaysia, Singapore, Brunei, East Timor, Indonesia, and the Philippines. Of the Southeast Asian countries, East Timor most recently gained its independence, as was mentioned in the previous lesson.ndonesia has the fourth-largest population of any country in the world, after the United States, India, and China. Indonesia also has more Muslims than any other country in the world. More than half the population of Indonesia lives on Java, the island where Jakarta, the capital city, is located.