In 4000 BC until 2000 BC, the bay of Kuwait was home to the Dilmun civilization. Dilmun's control of the bay of Kuwait included mainland Akkaz, Umm an Namil Island, and Failaka Island. At its peak in 2000 BC, the Dilmun empire controlled the trade routes from Mesopotamia to India and the Indus Valley civilization. Dilmun's commercial power began to decline after 1800 BC. Piracy flourished throughout the region during Dilmun's decline. After 600 BC, the Babylonians added Dilmun to their empire.