Why did the north have to use immigrant labor in the factories?

because it was cheaper to pay the immigrants duh! common sense

cheap

Explanation:

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

hi!

your answer is d

mark me brainliest

~courtney