They didn't. By the time the USSR finished fighting Germany (by themselves because Churchill and FDR didn't want to help), the US had been fighting Japan for a while. The USSR did declare war on Japan after the Germans surrendered. Before the USSR could do anything, the US dropped it's two atomic bombs. The Japanese were rumored to have started peace negotiations with the USSR agreeing to act as the liason after the Little Boy bombing, but the Fat Man prevented it. Many say the US bombed Japan because they didn't want the USSR sweeping in as the hero.
The already planned mutual invasion of Japan by US and USSR. But this was expected to take 1 to 2 more years and many millions of lives on both sides, as well as the division into a communist North Japan and free South Japan. The 2 atomic bombs were very merciful by comparison.
No, the US did not end the war with help from the Soviet Union. The Soviet Union, along with Britain and other Allied Europeans, ended the war with some help from the US. World War II was not America's war, it was Europe's. The US only entered after Japan bombed Pearl Harbor.
Both were subjected to unprovoked attack, The USSR by Germany and the US by Japan.
The axis powers were Germany, Italy and Japan. They united to fight the US, Britain, the USSR and France in World War II.
USSR had signed an agreement with the US to enter the Pacific war against Japan in order to get land deals (some of Japan's islands) and loans. The US honored most of the agreement even though US decided to drop the bombs. Russia still owns some of these islands. Stalin found out about the A bomb in 1943 and saw the specs from his spies at Los Alamos at this time. He knew about the bomb when he signed the agreement with US. Note: Far earlier than Rosenberg involvement.
Hitler declared war on the US on 11 December 1942, in the hopes that if they helped Japan fight the US, Japan might help them fight the USSR.
Great Britain, the Netherlands, the Philippines, Australia, and others.
Short term-Japan/Long-term USSR
US became global consumer for export goods of Germany, Japan, USSR & China. Goal was to help redevelop the economies.
US became global consumer for export goods of Germany, Japan, USSR & China. Goal was to help redevelop the economies.
US,UK, USSR, France Germany, Italy, Japan
USSR; US; UK; Germany & Japan.
USA - 4 ussr - 3
The already planned mutual invasion of Japan by US and USSR. But this was expected to take 1 to 2 more years and many millions of lives on both sides, as well as the division into a communist North Japan and free South Japan. The 2 atomic bombs were very merciful by comparison.
Not likely if hitler defeated Britain then he would be able to help Japan take over asia and the pacific with Italy and the ussr helping germany
US, UK, USSR, Germany, Japan, Italy
No, the US did not end the war with help from the Soviet Union. The Soviet Union, along with Britain and other Allied Europeans, ended the war with some help from the US. World War II was not America's war, it was Europe's. The US only entered after Japan bombed Pearl Harbor.