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.

oil! is what i am assuming