own.6.The Tigris and Euphrates rivers were the method for transportation.7.The Mesopotamians traded for things they lacked such as copper, stone, and wood.8.The Mesopotamians believed in many gods and goddesses such as Anv,Enlil,Enki, and Ninhursay.9.Temple priest made gods happy by burning incense, or offered food/drink.10.The class system for Sumer, a city/state in Mesopotamia, is Kings or Queen