Was mainstream American culture distinct from African-American culture during this period

Who's idea was it for businessmen to use their wealth for the greater good of society? (gospel of wealth ~ap u.s. history

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.

Which foreign policy initiative countered the spread of soviet influence by restricting the spread of communism? a. roosevelt corollary b. truman doctrine c. nullification proclamation d. good neighbor policy