Southeast Asia includes the Indochina Peninsula, which juts into the South China Sea, the Malay Peninsula, and the Indonesian and Philippine Archipelagos. The region has 10 independent countries: Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam.
Most of the influences that molded the societies of Southeast Asia predate European colonization, coming from early Chinese and Indian sources. Several great civilizations, including those of the Khmers and Malays, have flourished there. In the late 15th century, Islamic influences grew strong but were overshadowed by the arrival of Europeans, who established their power throughout Southeast Asia; only Thailand remained free of colonial occupation. Because of Southeast Asia's strategic location between Japan and India, and the importance of shipping routes that traverse it, the region became the scene of battles between Allied and Japanese forces during
World War II.
After the war the countries of Southeast Asia have reemerged as independent nations. They have been plagued by political turmoil, weak economies, ethnic strife, and social inequities, although the situation for most Southeast Asian nations improved in the 1980's and 90's. Throughout the 1960's and early 1970's, however, there were open conflicts between Communist and non-Communist factions throughout most of the region, especially in Vietnam, Laos, and Cambodia (Vietnam War).