Approximately how many Africans were forced, according to the estimate of scholars, into the trans-Saharan slave trade between 650 and 1500

d

explanation:

geography

this is because warmer climates often don't get people sick from the flu and regions where it was often colder more people received the flu. hope this if you need more reasoning i am here to

companies passed on production and transportation costs to consumers

to replace ineffective because   andrew jackson's spoil system was a deliberate policy after he became president to remove federal employees he considered to be political opponents and replace them with his own supporters.