As an Initial Change from the Neolithic Period,researchers Found That

As an initial change from the Neolithic period,researchers found that high crop yields,resulting from agricultural innovations:

A) made more protein available so the brain could expand.
B) provided more food for people,beginning an obesity epidemic.
C) contributed to high populations densities in ancient civilizations.
D) freed up people to become involved with trade speculation.
E) allowed large empires to obtain global dominance.