Geography of Taiwan and Green Island to the southeast, separated from the northernmost islands of the Philippines by the Bashi Channel. The islands of Kinmen and Matsu near the coast of Fujian across the Taiwan Strait have a total area of ; the Pratas and Taiping islets in the South China Sea are also administered by the ROC, but are not part of the Taiwanese archipelago. The island of Taiwan was formed approximately 4 to 5 million years ago at a complex convergent boundary between the Philippine Sea Plate and the Eurasian Plate. In a boundary running the length of the island and
Mainland Southeast Asia cultural influence from both India and China to varying degrees. Some cultures, such as those of Cambodia, Laos, Thailand and Malaysia are influenced mainly by India with a smaller influence from China. Others, such as Vietnam, are more heavily influenced by Chinese culture with only minor cultural influences from India, largely via the Champa civilization that Vietnam conquered during its southward expansion. Today, most of these countries also show pronounced Western cultural influences which began during the European imperialism in Asia and colonialism in Southeast Asia. The region except Malaysia is predominantly Buddhist. Mainland Southeast Asia Mainland Southeast Asia, also