The document summarizes key developments in the United States between 1800 and 1870. During this period, the country experienced significant physical growth through expansion westward via the Louisiana Purchase. Transportation infrastructure like canals, turnpikes, and railroads connected more areas. Politically, the era saw the rise of Jacksonian democracy and more common people gaining the right to vote, though it was initially restricted to white males. American literature during this time embraced Romanticism, emphasizing imagination, intuition, and nature. The document then focuses on Washington Irving, a prominent Romantic writer who authored short stories set in colonial America, drawing on European folktales and traditions.