The document discusses the market revolution and manifest destiny in the mid-1800s United States. It describes how the growth of factories, mills, and transportation infrastructure like canals and railroads led to a market revolution where goods were produced for wider commercial markets rather than local self-sufficiency. It also discusses how the concept of manifest destiny and westward expansion led many Americans to believe it was their destiny to settle from coast to coast, which resulted in treaties with Native Americans and the establishment of trails like the Santa Fe and Oregon trails to facilitate westward migration.