The document summarizes key events in the early 1800s involving Napoleon, the Louisiana Purchase, westward expansion led by Lewis and Clark, tensions with Britain over trade and impressment that led to the War of 1812, conflicts with Native American tribes as American settlers moved west, and calls for war by expansionists like Henry Clay and John C. Calhoun. Key events included Napoleon selling the Louisiana Territory to the United States in 1803, the Lewis and Clark Expedition from 1804-1806, the Embargo Act of 1807 in response to British actions, Tecumseh's efforts to unite tribes against American settlers, and the War of 1812 being declared in 1812 with expansionists like Clay and Cal