3. I'd choose this option: <span>North America’s distinct regional climates led to great cultural and economic diversity among American Indians. Cause I remember that the great tribes of the Anasazi were demised because of dry climate.
4. I'm pretty sure that the most suitable option that proves how Aztec and Inca civilizations were </span>different from American Indian civilizations in North America before contact with European explorers is: <span>They were generally larger and more politically intricate. At their best times they had big cities and advanced code of laws.
5. In my view the main difference between the northeastern Indian tribes from those who </span>lived in the Mississippi River valley prior to contact with Europeans is that they <span>created permanent agricultural villages. Other tribes preferred nomadism as the way of life.</span>
The agricultural revolution caused mortality rates to plummet and population to dramatically increase. Due to the surplus of food, the amount of deaths decreased and this allowed people to live for a longer amount of time and have more children to feed.
"<span>Introduction of American plants such as maize to Europe" is the only option that was a part of the Columbian exchange, since this exchange revolved primarily around the exchange of goods from the New World to Europe. </span><span />
