Boston, New York, and Charleston prospered during the colonial era due to what geographic feature?
A)Fertile soil
B)Natural harbors
C)Deposits of precious metals
D)Large tracks of forest

regulate taxes

explanation:

they had many gains 1 one freedom for slaves the major cause of the civil war is that the   north wanted freedom for slaves but the south didn; t creaitng the civil war

another gain they have is poltiical influence

poltiical influence is a big thing everywhere even now peoplle are always trying to get the head up in poltics thats what they did by giving the republicians a good name for freeing slaves

the colonial period, since this was a time of mass immigration from a variety of people from europe.