How did the development of the steam engine change where factories could be located?

a.
it allowed boats to travel up a river.

b.
mills and other factories did not have to be built next to rushing rivers since steam, instead of water, was used to power the machines.

c.
the steam engine made it easier and cheaper to transport goods to all regions of the country.

d.
people living near the great lakes could transport products to and from cities in the eastern united states.