3. About 7000 years ago:
Native Americans began farming. They cross-bred
different types of grass until they developed
Corn. Corn became the staple crop, but other crops
followed.
Growing food enabled the Native Americans to settle in one
place instead of wandering for food.
Years of farming enabled a food surplus to develop.
Food surplus enabled the development of civilizations.
WHY?
4. What makes a Civilization?
advanced agriculture,
long-distance trade,
occupational specialization,
and urbanism (city living).
NONE of which is possible without FOOD SURPLUS!!!
5. The major civilizations
Olmec (Southern Mexico)
Maya (Southeastern Mexico)
Inca (NW South America
Aztec (Central Mexico)
Moundbuilders (Mississippi & Ohio
River Valleys)
Pueblo (SW United States)
