The answer is D.
this is because of industrialization! this resulted in urbanization
U.S production plummeted
U.S inventors didn't have enough money to invent
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Answer:
According to the Muslims, Muhammad was the last and the greatest of all prophets because he had the most success in launching God's word in his life. Muhammad was sent by God as a messenger as guidance to spread a religion of truth. He was able to give Arabs their new identity by introducing a new faith monotheism.
Its an important center for salt production. I hope this helps! ^0^