Construction on the national road began in 1811 in cumberland, maryland. by 1818, it connected the potomac river with the ohio river. eventually, it went to vandalia, illinois. which of the best explains why the national road was
important?

a} it provided an easier way for people to travel from the north to the south.

b} it provided an easier way for people to travel from the east coast to the west.

c} it connected people from the east coast to california.

d} before the road was built, americans had no access to areas in the west.