Euphrates and Tigris were cradle of Occidental and Indian civilizations. [1] Drought drove Andites to valleys of Euphrates. [2] The second garden was constructed in the middle of Euphrates and Tigris rivers, adjoined to Euphrates. [3] A small Nodite group at the mouth of the Tigris and Euphrates rivers maintained more of their racial integrity. The were the ascendants of Sumerians. [4]