400
Name one of the Civilizations (other than the Sumerians) that were in Mesopotamia and tell me what they were known for.
Babylonian: Code of Hammurabi, astronomy (sun, moon planets)
Hittites: Iron tools & weapons
Assyrians: Library & well organized society
Persians: Conquerors, trade, coins, Zoroaster religion
Phoenicians:Sailors & traders, alphabet similar to ours