Under president coolidge, the concerns of mexican americans and african americans were

Which of the following inventions most directly allowed ancient farmers to produce a surplus ?

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.

In 150-200 words, name three advancements made by the egyptians and tell how they impacted the culture.