Pada pendapat anda, mengapakah manusia Zaman Prasejarah tinggal di lembah sungai dan di dalam gua?​

What is guaranteed by the 5th amendment

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 statement describes the impact of the 21st amendment?