Drag the words to the boxes in the sentence.

By the ninth century, the ________ empire had emerged in Eastern Indochina. It developed around agriculture and used _______ to store water. To the south, the Srivijaya empire emerged in _________. It relied on farming and trade.

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.