Answer:
Persia's major success as an influential empire were transportation, coordination, and their tolerance policy. One of the main reasons that the Persian Empire was so successful was because of their tolerance of non-Persian citizens living in Persia.
With the rise of colonies in the Americas and their need to incorporate laborers, Europeans focused their attention to Africa, and some asserted that the Transatlantic Slave Trade would make it possible for Africans to make contact with Christianity and 'civilisation'.
For this reason, religion was an important driver during slavery period, since Africans slaves, after their arrival to the Americas, were subject to different methods to make them more docile, being Christianity a crucial part.
Answer:
Europeans could not navigate African rivers, which had many rapids, cataracts, and changing flows.
