How did imperialism heighten tensions in europe ?

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.

Are first amendment rights guaranteed in every situation? a. yes, because protecting civil liberties was one of the most important values to the founders of this country b. no, because sometimes the government limits individual freedoms for the benefit of the public as a whole. c. no, because people have to earn their first amendment rights by behaving in a responsible way. d. yes, because the first amendment is part of the constitution, which is the basis for all law and government.

What is the line drawn on a production possibilities graph called?