Cities grew along railroads and canals because
answer
a. workers could not live anywhere else
b. the government designed the cities
c. there were not enough roads made of tar
d. settlers could obtain cheap land nearby

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.