Answer: As a nation dependent on the institution of slavery, the United States feared that the Haitian Revolution would lead to a revolt in the American South.
Explanation:
In the United States, there were mixed reactions to the Haitian Revolution which freed the enslaved people of Haiti as on the one hand, throwing of the shackles of their colonial masters like the Americans did was reminiscent of the America Revolution.
On the other hand however, the United States was quite dependent on the agricultural activities of the South which relied heavily on slavery. The US therefore feared that the Revolution would lead to a revolt in the American South which led them to refuse recognition of Haiti till the year 1862.
This is true. They took jobs in the north in factories for low wages. This increased the amount of industiralized areas. True.
Immigration and farming I'd say. European farmers introduced new things to the Indians for example. and as these Indians moved around, they passed on there ways to others
