¿Cómo el intercambio de bienes e ideas a través de Eurasia aumentó el dominio mongol?

What role did imperialism play in world war 2

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.

The louisianna purchase was controversil because