By the ninth century, the Khmer empire had emerged in eastern Indochina. It developed around agriculture and used irrigation systems to store water. To the south, the Srivijaya empire emerged in Sumatra. It relied on farming and trade.
By the ninth century, the By the ninth century, the _____ empire had emerged in eastern Indochina. It developed around agriculture and used empire had emerged in eastern Indochina. It developed around agriculture and used ______ to store water. To the south, the Srivijaya empire emerged in ________ to store water. To the south, the Srivijaya empire emerged in . It relied on farming and trade.
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