3. -building civilizations and food production systems -the stationary life agricultural production required, and the new scale on which people were growing food in those newly settled regions.
5. the climate shift that took place at the end of the last Ice Age the climate became more suitable for the species of human leading to our own to live in. before the Ice Age was over, human beings were able to colonize much of the world in the way they wouldn’t be able to later
7. These first civilizations included: ancient Sumer, composed of many city-states, ancient Egypt, and nearby Nubia, among other early and widespread centers of innovation After 3,500 B.C.E., cities were developing independently in several places on earth.
