Answer:
he pre–Civil War years (1820–1860, or the “antebellum years”) were among the most chaotic in American history—a time of significant changes that took place as the United States came of age. During these years, the nation was transformed from an underdeveloped nation of farmers and frontiersmen into an urbanized economic powerhouse. As the industrialized North and the agricultural South grew further apart, five major trends dominated American economic, social, and political life during this period.
Explanation:
Technological advancements
So the geography was mostly mountains and they didn't want to have to climb over them to get west because they were pretty much lazy bums
Lacking a political voice,
Invisible to the middle class,
Jobless due to automation,
ALL OF THE ABOVE
