Which area of north america is the ancient plano culture associated with ?
a. the rocky mountain
b. the california coastline
c. the great plains
d. the canadian tundra

Which answer best describes the u.s. national road? it ran from atlanta to baltimore and followed the railroad. it ran from new york to chicago and was made from wooden planks. it ran from massachusetts to ohio and ran parallel to the canal system. it ran from maryland to illinois and was made using macadam construction.