How do social scientist interpret the past

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.

Where were the trials to review evidence in cases against high-ranking nazi officials accused of war crimes held?

Clouds thar look like whisps of hair are