The American party welcomed the immigrants from Germany and Ireland. They offered them refuge and at the same time, allowed them to work in America. The immigrants were a strong workforce during the middle of 1800's. They built canals and railroads.<span />
it actually lead to the Kansas-Nebraska Act by Stephan Douglass. Let just say because of the the act Kansas didn't end very well which lead to a preview of Bleeding Kansas which was a preview of the Civil War.