Although it incorporates evolutionary bias, here is a summary of 2 papers that are interesting:
http://www.sciencedaily.com/releases/2012/11/121112135516.htm
Links are provided to the full papers but I am too cheap to subscribe!
It should also be remembered that, according to our timeline of history, the so-called prehistoric cave men lived during the same general periods as other prosperous and advanced civilizations. They just lived in different places and under different circumstances for, perhaps, a thousand different reasons.
If, 5000 years from now, you were to archaeologically compare our life in the city with life on a farm just by the animal bones, you might think one came before the other.
(Actually, you might think the garbage dump was the center of activity! - ha)