Jefferson By AydenN127 Dec 26, 1776 Battles of Trent and New Jersey Sep 11, 1777 Howe captured Philadelphia Sep 19, 1777 American and British Battle of Saratoga Dec 19, 1777 Winter at Valley Forge Apr 2, 1780 British forces capture Charles Town Apr 2, 1780 British surrender at Yorktown Sep 3, 1783 Treaty of Paris Mar 2, 1807 Congress prohibits enslaved people imported to the US