This map shows the shifting center of american population in the first two centuries of it’s existence. what might best account for this shifting trend?

the corect answer is B. The geographic land forms that once limited movement are no longer there.

Explanation:

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.