The deskilling of manufacturing. As technology advanced, workers increasingly lost the proud Independence that had been a characteristics of their craftwork. This was because of the deskilling of labor under a new system of mechanized manufacturing that industrialist Henry Ford woould come to call "mass production".
The provisions of the Missouri Compromise forbidding slavery in the former Louisiana Territory north of the parallel 36°30′ north were effectively repealed by Stephen A. Douglas's Kansas–Nebraska Act of 1854.
