Answer:
it was an imaginary line that separated Eastern and Western Europe.
Explanation: im smart like that
In this case, any value given up by not choosing to
<span> spend or save the money is the "opportunity cost", because the money </span>could be spent elsewhere. "trade offs" and opportunity costs are very similar though in economics.
Answer:
The Catholic Church became very rich and powerful during the Middle Ages. Because the church was considered independent, they did not have to pay the king any tax for their land. Leaders of the church became rich and powerful. Many nobles became leaders such as abbots or bishops in the church.
Explanation:
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#2- Trade emerged as a main source of income.