U. S. cities grew quickly during the early 1800s because: A. poor transportation made it difficult to leave cities.
B. nativists called for more Americans to move to cities.
C. education became freely available in cities.
D. recent immigrants often had to live in cities.

because there were many people from their native countries living there,There were several reasons why cities grew so quickly in the United States in the late 1800s. ... Many immigrants were coming to the United States during this time.

Explanation:

for people without the "recent immigrants often had to live in cities" answers

the answer is "Trade with other countries brought people and business to cities"

Explanation:

A P E X

to replace ineffective because   andrew jackson's spoil system was a deliberate policy after he became president to remove federal employees he considered to be political opponents and replace them with his own supporters.