What was the first known civilization of the world?
Mesopotamia ... but they keep finding ruins even older, so nobody really knows for sure.,
The Indus Valley Civilization and the Egyptians were also very early civilizations.
Mesopotamia, Babylon and Assyria had the first codified laws I think. ( Chinese had a civilization when a lot of nations were still living in trees.)
The Indus River civilization
As tony737 said its them they were in the Middle East by the Euphrates and Tigris river right in the middle
lookatthe Orkneys they didreal well and that was morethan 5000 yearsago!