History of the United States (1815–1849)

The history of the United States from 1815 to 1849—also called the Middle Period, the Antebellum Era, or the Age of Jackson—involved westward expansion across the American continent, the proliferation of suffrage to nearly all white men, and the rise of the Second Party System of politics between Democrats and Whigs. Whigs—representing merchants, financiers, professionals, and a growing middle class—wanted to modernize society, using tariffs and federally funded internal improvements; Jacksonian Democrats opposed them and closed down the national bank in the 1830s.

Source: Wikipedia — History of the United States (1815–1849) (CC BY-SA 4.0)