Dilmun, or Telmun, (Sumerian: , later 𒉌𒌇(𒆠), ni.tukki = DILMUNki; دلمون) was an ancient East Semitic-speaking civilization in Eastern Arabia mentioned from the 3rd millennium BC onwards. Based on contextual evidence, it was located in the Persian Gulf, on a trade route between Mesopotamia and the Indus Valley civilisation, close to the sea and to artesian springs. Dilmun encompassed Bahrain, Kuwait, and eastern Saudi Arabia. This area is certainly what is meant by references to "Dilmun" among the lands conquered by King Sargon II and his descendants. The great commercial and trading connections between Mesopotamia and Dilmun were strong and profound to the point where Dilmun was a central figure to the Sumerian creation myth. Dilmun was described in the saga of Enki and Ninhursag as pre-existing in paradisiacal state, where predators do not kill, pain and diseases are absent, and people do not get old. Dilmun was an important trading centre. At the height of its power, it controlled the Persian Gulf trading routes. According to some modern theories, the Sumerians regarded Dilmun as a sacred place, but that is never stated in any known ancient text. Dilmun was mentioned by the Mesopotamians as a trade partner, a source of copper, and a trade entrepôt. The Sumerian tale of the garden paradise of Dilmun may have been an inspiration for the Garden of Eden story. Dilmun was an important trading center from the late fourth millennium to 800 BC. At the height of its power, Dilmun controlled the Persian Gulf trading routes. Dilmun was very prosperous during the first 300 years of the second millennium BC. Dilmun was conquered by the Middle Assyrian Empire (1365–1050 BC), and its commercial power began to decline between 1000 BC and 800 BC because piracy flourished in the Persian Gulf. In the 8th and 7th centuries BC the Neo-Assyrian Empire (911–605 BC) conquered Dilmun, and in the 6th century BC the Neo-Babylonian Empire, and later the Achaemenid Empire, ruled Dilmun.