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Thomas Jefferson takes his seat as the third U.S. president.
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The Louisiana Purchase eventually doubled the size of the United States, greatly strengthened the country materially and strategically, provided a powerful impetus to westward expansion, and confirmed the doctrine of implied powers of the federal Constitution. -
Robert Fulton developed the first commercial steam boat service up and down the Hudson River in 1807. -
The United States achieved its greatest battlefield victory of the War of 1812 at New Orleans. The Battle of New Orleans thwarted a British effort to gain control of a critical American port and elevated Major General Andrew Jackson to national fame.
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The Nullification Crisis was caused by the tariff acts imposed by the federal government. The 1828 Tariff Abominations increased the tariffs up to 50%, thus igniting the nullification crisis
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Samuel Morse was an American painter and inventor who developed an electric telegraph (1832–1835). In 1838 he and his friend Alfred Vail developed the Morse Code. -
Abraham Lincoln was elected president. -
Conflict between the North (the Union) and the South (the Confederacy) over the expansion of slavery into western states.