By the ninth century which empire had emerged in eastern Indochina? It developed around agriculture and used reservoirs to store water.

It is said the Khmer emerged in eastern Indochina. Yet to the south, the Srivijaya empire emerged where? It relied on farming and trade.

The Srivijaya empire emerged in the region that is now modern-day Indonesia. It was located primarily on the island of Sumatra but also had control over several other islands in the region.