Who were the first to incorporate the African slave trade in the New World?

Iwant to be an engineer but cant do math for the life of me, but i also want to be a cop. "what should i do"

What role did the alliance system play in preventing austria-hungary and serbia from coming to a compromise settlement?

Which act of the conquistador pizarro was crucial in overthrowing the inca? a. the destruction of the ancient inca city, machu picchu b. the siege of the inca capital near the cuzco valley c. the execution of the last inca ruler, atahualpa d. the unexpected deaths of 3 million inca warriors e. the murder of former inca emperor, huascar