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Thomas Jefferson became president in 1801 -
The Louisiana Purchase doubled the size of the United States. -
Lewis and Clark were sent to explore the land that was acquired in the Louisiana Purchase. This expedition altered the imperial struggle for the control of North America and strengthened the U.S. claim to land. -
The Embargo Act of 1807 was Thomas Jefferson's resistance to the British and French destruction of American merchant ships carrying, or suspected of carrying, war materials. -
James Madison became president in 1809 -
The War of 1812 was caused by British restrictions on U.S. trade and America's desire to expand its territory. -
James Monroe became president in 1817 -
The Missouri Compromise added Missouri as a slave state and Maine as a free state. The compromise maintained a delicate balance between free and slave states. -
The Monroe Doctrine was given by James Monroe that states that America was no longer open to further colonization. It also declared that the United States would not allow European countries to interfere with the governments of America. -
John Quincy Adams became president in 1825 -
The typewriter was invented by William Austin Burt in 1829 -
Andrew Jackson became president in 1829 -
The Trail of Tears was part of the Indian removal, a series of forced displacements and ethnic cleansing -
Samuel Morse invented the telegraph in 1837. -
Martin Van Buren became president in 1837 -
William Harrison became president in 1841 -
John Tyler became president in 1841 -
James K. Polk became president in 1845 -
The Mexican-American War was caused by the argument over the Republic of Texas. They fought over who should get Texas. -
Zachary Taylor became elected president in 1849 -
Millard Fillmore became president in 1850 -
Franklin Pierce became president in 1853 -
James Buchanan became president in 1857 -
The Civil War was caused by the differences between the free states and the slave states. Theses states argued over the power of the national government to prohibit slavery. -
Abraham Lincoln became president in 1861 -
The Emancipation Proclamation was an order by U.S. President Abraham Lincoln to free slaves in 10 states. -
Ulysses S. Grant became president in 1869 -
The telephone was invented by Alexander Graham Bell in 1876