Mosques are centers of islamic worship. true false

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.

Why did president johnson decide not to run for reelection in 1968?

What kind of contact did christopher columbus and native americans initially have?