B. they were centers of trade.
im not sure but tis is the correct answer
they fought for control of the river water
It is part of the marginal benefit
hope this helps you
Answer:
Alternative-A choice that can be selected over something else
Scholarship- Financial aid awarded to a student by a college
Grant-A gift especially of money
Tuition-the price of attending classes
Explanation:
I think the correct answer is B.
