Should the US have used military strength to make the USSR collapse

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.

By july of 1950 north korean forces had pushed south korean forces as far south as

Debris tossed into the atmosphere by a meteorite impact can cause greenhouse warming true false