Answer:
D. Fords revolutionary use of the assembly line to make less-expensive cars.
Explanation:
The immediate impact of the assembly line was revolutionary. The use of interchangeable parts allowed for continuous workflow and more time on task by laborers. Worker specialization resulted in less waste and a higher quality of the end product. Sheer production of the Model T dramatically increased.
African slaves were imported to work in America because Africans were immune to some European diseases and experienced at European farming techniques.
B. Africans were immune to some European diseases and experienced at European farming techniques.
<u>Explanation:</u>
During 16th century, Spanish started to import many Africans as slaves to work in the European farm. Americans were prone to European diseases and they also demanded large pay for the work. Thus, the government decided to import slaves from Africa.
Africans were immune to European diseases and they had better experience in European farming techniques. The pay demanded by the African slaves was also less compared to indigenous laborers. So Africans were imported as slaves to work in Americans farm.
The answer is B: The Europeans were trying to convert them to Christianity
