An American who believes that government should not get involved in the economy, but should restrict social choices, is most likely to be a "conservative" although of course there are exceptions.
The immigrants were looking for economic stability
The main factor that influenced African Americans to migrate from the South to Northern cities was that they were looking for better economic opportunities.
The Great Migration, also known as the Great Northward Migration in the 20th century, happened because most black people were badly treated by many people that still expected African Americans to be slaves, and their economic conditions were quite poor.
As a result, African Americans decided to migrate to the Northern cities, where they would get many job opportunities as well as going to have a better lifestyle by not being discriminated.
Free soilers or free staters
Industries in New England started to develop a lot faster due to the advancements in technology. They started using coal instead of wood, steam engines instead of manual labor, and cotton mills.