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Declaration of Independence
The Declaration of Independence is adopted by Congress. officially making the american colonies independent and starting the Revolutionary War. -
Siege of Yorktown
The decisive battle of the Revolutionary War, where George Washington's army defeated British General Cornwallis. -
Constitutional Convention
Delegates from 12 states meet in Philadelphia to write the U.S. Constitution. -
the Cotton Gin
Eli Whitney's invention of the cotton gin revolutionizes cotton production and increased demand for slaves. -
Louisiana Purchase
The United States purchased the Louisiana Territory from France for $15 million, doubling the size of the country. -
War of 1812
The United States declares war on Britain over maritime rights and territorial expansion. The war ends in a stalemate, but it solidifies American independence. -
Missouri Compromise
The U.S. Congress passed the Missouri Compromise, making Missouri a slave state and Main a free state, and establishing a boundary between future slave and free territories. -
Texas Declaration of Independence
Texas declares its independence from Mexico, leading to the Texas Revolution. -
Mexican-American War
A conflict between the U.S. and Mexico after the annexation of Texas. The U.S. victory leads to the Treaty of Guadalupe Hidalgo, the U.S. acquires California, New Mexico, and other territories. -
Abraham Lincoln Elected President
Abraham Lincoln wins the U.S. presidential election as the first Republican candidate.