Which two factors combined to contribute to the development of the African slave trade?
A the high death rate of indigenous people in the Americas partly due to malaria and yellow fever
B the deaths of far more northern soldiers from yellow fever and malaria compared to Confederate troops
C the development of genetic resistance to malaria and immunity to yellow fever by African people
D the Nazis’ decision to flood swamps in Italy on purpose to use mosquito-borne diseases as a weapon
E the use of pesticides in the United States to control mosquitos which had unintended effects on humans
The correct answer is A: the high death rate of indigenous people in the Americas partly due to malaria and yellow fever and C: the development of genetic resistance to malaria and immunity to yellow fever by African people.
Explanation: The high death rate of indigenous populations due to diseases like malaria and yellow fever created a labor shortage in the Americas, which encouraged European colonists to seek enslaved Africans who had developed some genetic resistance to these diseases. This combination of labor demand and the ability of African people to survive better in these conditions significantly contributed to the growth of the African slave trade.