Government
Religion
Arts
Social structure
Stable food supply
Technology
Writing
Babylonians
Neo-Babylonians
Indus River Valley People
Minoans*
Olmecs*
Shang Dynasty
Etruscans
Mesopotamia. Photograph. Britannica ImageQuest, Encyclopedia Britannica, 25 May 2016.
quest.eb.com/search/309_1155422/1/309_1155422/cite. Accessed 19 Mar 2018.