Answer:
The percentage of the European population who died due to the black death ranges from 30 to 50%, and in some urban areas, especially in southern European countries like Italy, 60-70 and even 80% of the population died.
The black death was very contagious, had an extremely high mortality rate, and medicine at the time had no means to combat the disease, hence the very high death toll of the plague.
The answer should be D. a large company or combined business that control a specific market
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B. Delivering water to dry areas for growing crops
