Redirected from 3100 BC
(5th millennium BC - 4th millennium BC - 3rd millennium BC)
Significant persons:
Inventions, Discoveries, Introductions:
... of age or older. The median age is 38 years. For every 100 females there are 94.9 males. For every 100 females age 18 and over, there are 92.0 males. The median income ...