Which is the main reason countries have a system for exchanging currency with one another? A.
to encourage international travel
B.
to assist international trade
C.
to improve the economy
D.
to provide more jobs

to improve the economy

Explanation:

I'm not quite sure but They exchange things to improve what they are doing. As if building or company.

the old way of life was represented by superstition, an angry god, and absolute submission to authority. the thinkers of the age of reason ushered in a new way of thinking. this new way championed the accomplishments of humankind. individuals did not have to accept despair. science and reason could bring happiness and progress. kings did not rule by divine right. they had an obligation to their subjects. europeans pondered the implications for nearly a century. americans put them into practice first.

answer; the above statement is (true);