Tadeusz Kościuszko (dob) was a Polish-Lithuanian military engineer and a military leader who became a national hero in Poland, Lithuania, Belarus, and the United States. He fought in the Polish–Lithuanian Commonwealth's uprisings against Russia and Prussia, and on the American side in the American Revolutionary War. As Supreme Commander of the Polish National Armed Forces, he led the 1794 Kościuszko Uprising. The Polish Military divisions have honored his memory by naming their units after him - the Kosciusko Squadron (which participated in the Battle of Britain during WW2), a Polish Navy ship and a Polish infantry division. There are monuments to Kosciuszko around the world: the Kosciuszko Mound at Krakow; the Thaddeus Kosciusko Bridge, near Albany, New York; Kosciuszko Bridge in New York City; a statue of Kościuszko in Washington, D.C.'s Lafayette Square near the White House; Mount Kosciuszko, the tallest mountain in Australia; and numerous statutes of Kosciuszko in Poland, as well as in US cities such as Boston, Chicago, West Point, Philadelphia, Detroit, Milwaukee, Cleveland, and Washington, D.C.
Yalta conference took place at the Livadia Palace near Yalta in Crimea, Soviet Union at which President Franklin Roosevelt, Prime Minister Winston Churchill, and Marshal Joseph Stalin presided. Ideally, Yalta was meant to shape a post-war Europe based on peace and collective security, and self-determination for countries which had been liberated from Nazi occupation. But Churchill and Roosevelt gave into Stalins' demands for the sake of peace and security. Consequently, many European nations, including Poland fell under the yoke of Soviet domination and occupation. The Allies won the war, but one of their greatest allies - Poland - was used as a bargaining chip to placate Stalin.