Events from the year 1780 in the United States.
Incumbents
President of the Second Continental Congress: Samuel Huntington
Events
January–March
January 16 – American Revolutionary War – Battle of Cape St. Vincent: British Admiral Sir George Rodney defeats a Spanish fleet. February 3 – American Revolutionary War: Battle of Young's House March 1– Pennsylvania is the first American state to abolish slavery. March 29–May 12 – American Revolutionary War: Siege of Charleston
April–June
April 14 – American Revolutionary War: Battle of Monck's Corner
May 6 – American Revolutionary War: Battle of Lenud's Ferry
May 12 – American Revolutionary War: Charleston, South Carolina is taken by British forces. May 13 – Cumberland Compact signed by American settlers in the Cumberland Valley of Tennessee. May 19 – New England's Dark Day: An unaccountable darkness spreads over New England, regarded by some observers as a fulfillment of Bible prophecy. May 25–August 4 – American Revolutionary War: Bird's invasion of Kentucky May 29 – American Revolutionary War: Waxhaw Massacre: Loyalist forces under Col. Banastre Tarleton kill surrendering American soldiers. June 7 – American Revolutionary War: Battle of Connecticut Farms June 10 – American Revolutionary War: Battle of Mobley's Meeting House June 20 – American Revolutionary War: Battle of Ramsour's Mill June 23 – American Revolutionary War – Battle of Springfield: The American victory at Springfield effectively ends British ambitions in New Jersey.
July–September
July 11 – Expédition Particulière: French soldiers arrive in Newport, Rhode Island to reinforce colonists in the American Revolutionary War. July 12 – American Revolutionary War: Battle of Williamson's Plantation July 21 – American Revolutionary War: Battle of Colson's Mill August 1 – American Revolutionary War: Battle of Rocky Mount August 6 – American Revolutionary War: Battle of Hanging Rock August 8 – American Revolutionary War: Battle of Piqua August 16 – American Revolutionary War: Battle of Camden: British troops inflict heavy losses on a Patriot army at Camden, South Carolina. August 18 American Revolutionary War: Battle of Fishing Creek American Revolutionary War: Battle of Musgrove Mill August 28 – American Revolutionary War: Battle of Black Mingo September 21 American Revolutionary War: Battle of Wahab's Plantation Benedict Arnold gives detailed plans of West Point to Major John André. Three days later, André is captured with papers revealing that Arnold was planning to surrender West Point to the British. September 25 – Benedict Arnold flees to British-held New York. September 26 – American Revolutionary War: Battle of Charlotte
October–December
October 2 – American Revolutionary War: In Tappan, New York, British spy John André is hanged by American forces. October 7 – American Revolutionary War – Battle of Kings Mountain: Patriot militia forces annihilate a Loyalists under British Major Patrick Ferguson at Kings Mountain in South Carolina. October 9 – Great Hurricane of 1780: The deadliest Atlantic Hurricane in recorded history October 16 – American Revolutionary War – Royalton Raid October 17 – American Revolutionary War – Battle of Shallow Ford October 19 – American Revolutionary War – Battle of Klock's Field October 25 American Revolutionary War – Battle of Tearcoat Swamp John Hancock is sworn in as the first governor of Massachusetts. November 9 – American Revolutionary War – Battle of Fishdam Ford November 20 – American Revolutionary War – Battle of Blackstock's Farm
Undated
Woodford Reserve bourbon whiskey distillery begins operation in Kentucky.
Ongoing
American Revolutionary War (1775–1783)