500
Long before the rule of pharaohs, Egyptians grew wheat and barley and raised pigs, goats, sheep and cattle. Spotty evidence had suggested that agriculture was practiced there more than 7,000 years ago, two millenniums earlier than the first royal dynasties....— John Noble Wilford, New York Times, February 12, 2008
This excerpt is referring to this period of history
What is the Neolithic Revolution