What were some characteristics of American Indian cultures, and how and why did people move within the Americas prior to contact with Europeans?

How did cultural change create social conflict?

Prior to the presence of europeans on the continent, the slave trade in africa a) did not exist in any form. b) was limited to internal trade only. c) included the trans-saharan and indian ocean slave trade. d) was rarely needed due to the lack of an agricultural economy.

What does the term “escalation” refer to?