February 6 » American Revolutionary War: In Paris the Treaty of Alliance and the Treaty of Amity and Commerce are signed by the United States and France signaling official recognition of the new republic.
February 9 » Rhode Island becomes the fourth US state to ratify the Articles of Confederation.
February 23 » American Revolutionary War: Baron von Steuben arrives at Valley Forge, Pennsylvania to help to train the Continental Army.
June 18 » American Revolutionary War: British troops abandon Philadelphia.
July 27 » American Revolution: First Battle of Ushant: British and French fleets fight to a standoff.
January 1 » American Revolutionary War: One thousand five hundred soldiers of the 6th Pennsylvania Regiment under General Anthony Wayne's command rebel against the Continental Army's winter camp in Morristown, New Jersey in the Pennsylvania Line Mutiny of 1781.
August 5 » The Battle of Dogger Bank takes place.
August 24 » American Revolutionary War: A small force of Pennsylvania militia is ambushed and overwhelmed by an American Indian group, which forces George Rogers Clark to abandon his attempt to attack Detroit.
September 6 » The Battle of Groton Heights takes place, resulting in a British victory.
October 19 » American Revolutionary War: The siege of Yorktown comes to an end.
October 20 » The Patent of Toleration, providing limited freedom of worship, is approved in Austria.
When copying data from this family tree, please include a reference to the origin: Rien van Zuijlen, "Family tree Van Zuijlen - Beemsterboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-zuijlen-beemsterboer/I91.php : accessed June 15, 2024), "Jan Beemsterboer (1778-1781)".
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