I think it's the telephone because it allows people to communicate better and customers or workers don't have to walk up to everyone and disturb them. You may elaborate more on this with your own opinion
The answer would be, B. there was a more prosperous economy.
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Answer:
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Option C. Columbus underwent deep voyages and discovered the present day America. He also discovered the marine route which associated the old Eastern world to the new Western world.
After the establishment of Sea route there was exchange of goods with other countries started. But the negative impact was that people of Eurasia were not healthy with high levels of immunity.
The interchange of food supplies also initiated the arrival of dangerous diseases too and major part of the European, native American and Asian population died causing shortage of human labor, this gradually lead to the slavery of Africans.
The three enlightened monarchs of the 18th century were:
1. Joseph II of the Holy Roman Empire
2. Catherine the Great of Russia
3. Frederick the Great of Prussia
