WORLD HISTORY

Detailed explanation-1: -The most important factor in swaying the Soviets eventually to enter into an alliance with the United States was the Nazi decision to launch its invasion of the Soviet Union in June 1941.

Detailed explanation-2: -But which countries actually fought in the war? In fact, many nations were touched by the conflict, but the main combatants can be grouped into two opposing factions–Germany, Japan, and Italy where the Axis powers. France, Great Britain, the United States, and the Soviet Union were the Allied powers.

Detailed explanation-3: -The Soviet Union, which initially had a nonaggression pact with Germany and participated in its invasion of Poland, joined the Allies in June 1941, after the German invasion of the Soviet Union.

Detailed explanation-4: -Was Russia with the Allies in WW2? The Soviet Union (commonly called Russia) remained neutral with Nazi Germany until attacked in June 1941. Then the Soviet Union allied with Britain. After the United States joined the war in December 1941, the USSR also allied with this country against Nazi Germany.

Detailed explanation-5: -This system of alliances made it very likely that the next major war, if it occurs, would be fought between two major alliances-France, Russia and Britain fighting against Germany and Austria-Hungary. So, Russia was on the side of France and Britain in WW1.