During the mid-1800s, which region relied most on factories and a workforce of immigrants? question 2 options:
the midwest

the south

the north

the frontier

The North

During the mid-1800s, the Northern part of the country was the region that relied the most on factories and a workforce of immigrants. This region was the most industrialized region of the country, with manufacturing accounting for a large percentage of its economy. Moreover, it was also the country that received the most immigrants, especially those of European (Irish, Italians, Germans, English) and Asian (Chinese) origin.

d and a is the correct anwsers

explanation: