What are the costs and benefits of having a large number of cities

Explanation:

well really with a large number of cities that's a lot of money and time but there are a lot of money towards them to put back in the state. also you will have more representatives and have a more likely chance to have a law you want for america its self to pass. hope this helps

c. seafloor spreading occurs.

d. crust becomes molten rock.

e. denser plates slide under lighter plates.