Sumerians invent the sickle. Egyptian physician, Imhotep, begins to treat disease. Gilgamesh, Sumerians write story of a great flood and humans saved in an ark. Ling-lun invents the first bamboo flute. Cotton woven in Indus Valley.
Indian civilization takes root.
Sumarians develop a number system . First dolphins killed in the Black Sea. A picture from Mesopotamia, modern-day Iraq, reveals the earliest evidence of vehicle wheels. Egyptians establish city of Memphis. Sumarians establish centers of civilization.