Which statement explains why it is important to have a system of currency exchange?
o people like to collect different types of currency as a hobby.
it gives businesses a way to protect their earnings from thieves
o people use it every day when they make purchases at local stores.
olt makes the trading of goods and services between countries possible.

It makes the trading of goods and services between countries possible

The answer is D

Explanation:

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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