Answer:
Because of the drought, all the top soil of the land blew away and no crops could be grown, causing the population to move away, and the last was that food was scarce for a while.
Explanation:
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The answer(s) to your question is A, C, and D.
Individuals began to start more private businesses.
New banking systems financed the growth of business.
Factories began to employ specialized workers.
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Pope Gregory I was known for his writings, which were a lot more numerous and loved than those of any of his predecessors. One of his most famous writings were his Dialogues.