Why did the power of chiefs decline? Their groups adopted new power structures. Their groups wanted European leaders. Their groups separated and scattered. Their groups overthrew them.

Their groups adopted new power structures.

Explanation:

In the old days, they traditional settings in a given place is done in such a way that, the people are under the authority of traditional leaders called the Chiefs. This so called Chiefs wields enormous power and determine what happens in their domain.

With the coming of the colonists, their power to make and implement policies where taken away by them. They rather take advice from the colonial masters which they implement on their area.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

your answer would b. the missisipi river

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