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U.S. History Primary Source Timeline Colonial Settlement, 1600s - 1763 The American Revolution, 1763 - 1783 The New Nation, 1783 - 1815 National Expansion and Reform, 1815 - 1880 Civil War and Reconstruction, 1861-1877
- War of Independence. 1774 - Colonists form First Continental Congress as Britain closes down Boston harbour and deploys troops in Massachusetts. 1775 - American Revolution: George Washington leads Continental Army to fight against British rule.
- Civil War. 1854 - Opponents of slavery, or abolitionists, set up Republican Party. 1860 - Republican candidate Abraham Lincoln elected president. 1860-61 - Eleven pro-slavery southern states secede from Union and form Confederate States of America, triggering civil war with abolitionist northern states.
- World War I and the Great Depression. 1917-18 - US intervenes in World War I, but rejects membership of League of Nations in its aftermath. 1920 - Women given the right to vote under the Nineteenth Amendment.
- World War II and the Cold War. 1941 - Japanese warplanes attack US fleet at Pearl Harbour in Hawaii, leading to US joining World War II against the Axis powers.
The United States tests the first atomic bomb at the Trinity Site in New Mexico, July 16, 1945. The United States drops an atomic bomb on Hiroshima, August 6, 1945. The United States drops an atomic bomb on Nagasaki, August 9, 1945. Japanese Instrument of Surrender signed September 2, 1945.
- Discovery of the Americas. August 3, 1492 - Christopher Columbus set out on his first voyage with three ships and a crew of 90 to find a westward route to the east.
- The Revolutionary War. April 19, 1775 - Revolutionary War officially begins with the Battles of Lexington and Concord. May 10, 1775 - American forces take the British fort at Ticonderoga, New York.
- The New Nation. September 3, 1783 - United States gains what's currently Indiana, Illinois, Kentucky, Michigan, Ohio, Tennessee, Wisconsin, and parts of Alabama, Georgia, Minnesota, Mississippi, North Carolina, Pennsylvania, Virginia, and West Virginia as a result of the Treaty of Paris 1783.
- War of 1812. June 18, 1812 - United States declares war on Britain. March 4, 1813 - James Madison sworn in as President for a 2nd term. March 4, 1813 - Elbridge Gerry sworn in as the 5th Vice President for a 2nd term.
This article may be too long to read and navigate comfortably. Please consider splitting content into sub-articles, condensing it, or adding subheadings. Please discuss this issue on the article's talk page. (April 2023) This article is part of a series on the History of the United States Timeline and periods Prehistoric and Pre-colonial until 1607 Colonial period 1607–1765 1776–1789 ...