query: Who were the Allied forces in WW2?
passage: Allies of World War II
At the start of the war on 1 September 1939, the Allies consisted of France, Poland and the United Kingdom, as well as their dependent states, such as British India. Within days they were joined by the independent Dominions of the British Commonwealth: Australia, Canada, New Zealand and South Africa.[1] After the start of the German invasion of North Europe until the Balkan Campaign, the Netherlands, Belgium, Greece, and Yugoslavia joined the Allies. After first having cooperated with Germany in invading Poland whilst remaining neutral in the Allied-Axis conflict, the Soviet Union perforce joined the Allies in June 1941 after being invaded by Germany. The United States provided war materiel and money all along, and officially joined in December 1941 after the Japanese attack on Pearl Harbor. China had already been in a prolonged war with Japan since the Marco Polo Bridge Incident of 1937, but officially joined the Allies in 1941.
passage: Axis powers
On 23 August 1939, Germany and the Soviet Union signed the Molotov–Ribbentrop Pact, which contained a secret protocol dividing eastern Europe into spheres of influence. Germany's invasion of its part of Poland under the Pact eight days later triggered the beginning of World War II. By the end of 1941, Germany occupied a large part of Europe and its military forces were fighting the Soviet Union, nearly capturing Moscow. However, crushing defeats at the Battle of Stalingrad and the Battle of Kursk devastated the German armed forces. This, combined with Western Allied landings in France and Italy, led to a three-front war that depleted Germany's armed forces and resulted in Germany's defeat in 1945.