premise: The Siege of Fort Stanwix took place in 2000.
hypothesis: The Siege of Fort Stanwix ( also known at the time as Fort Schuyler ) began on August 2 , 1777 , and ended August 22 . The first official US flag was flown during battle on August 3 , 1777 , at Fort Schuyler . The Continental Congress adopted the following resolution on June 14 , 1777 : `` Resolved , that the flag of the United States be thirteen stripes , alternate red and white ; that the union be thirteen stars , white , on a blue field , representing a new constellation . ''