Were you surprised by the history of United States in the 1970s

Why does benjamin martin eventually join the continental army

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.

Profits are maximized when marginal revenue and marginal costs are a. set c. equal b. less than market price d. greater than market price