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Srivijaya - was a powerful empire centered on the island of Sumatra in modern day Indonesia. The earliest know reports of this kingdom are Chinese records from the 7th century A.D. It became an important point for the spreading of Buddhism, a major player in the maritime trade of the Indian Ocean and diplomatic partners with the Arab and Chinese kingdoms. The empire continued to exist until the mid 1300's when it collapsed under increasing violent rebellions and pressure from the neighboring Java empire.
Islamic Malacca - refers to the Malacca Sultanate which was founded by a relative of the royal family of Srivijaya around the year 1400. It controlled the southern tip of Thailand and the northern part of the island of Sumatra, becoming a major trade hub for all the island in the archepeligo. Although the people of his kingdom started out as Hindu and Buddhist, their leader later adopted Islam after famed Chinese admiral Zheng He helped save the kingdom from attacks by its enemies, but there is still much debate about whether this story is true. The sultinate was evenutally taken over by the Portugese in the 16th century and was passed between European powers as a colony from that point on.