1802. Admission of Ohio into the Union.
1803. The Louisiana Purchase is negotiated with France.
1804. Thomas Jefferson re-elected President. Decatur captures and burns the frigate Philadelphia at Tripoli. Lewis and Clark Expedition, 1804–1806. Napoleon proclaimed Emperor of France.
1805. Peace between the United States and Tripoli.
1806. The Leander, a British naval vessel, fires into an American coaster off Sandy Hook. Great Britain issues an “Order in Council” declaring the coast of Europe from the Elbe to Brest under blockade. Napoleon issues Berlin Decree. Culmination of Aaron Burr’s conspiracy and his arrest.
1807. Congress prohibits the importation of slaves. The British man-of-war Leopard fires upon the American frigate Chesapeake and takes four seamen claimed as British subjects. Aaron Burr tried for conspiracy and treason, and acquitted. Another British “Order in Council” forbids neutral nations to deal with France. Napoleon’s Milan decree forbidding trade with England. American Embargo Act, prohibiting foreign commerce.
1808. James Madison elected President. Embargo Act repealed. Non-intercourse Act passed, forbidding commerce with Great Britain and France.
1809. Recall of British minister asked by American government.
1810. Napoleon orders sale of captured American vessels, worth with their cargoes $8,000,000.
1811. General Harrison defeats Tecumseh at Tippecanoe. Fight between the United States frigate President and the British sloop-of-war Little Belt.