A. The United States and Russia joined the war. B. The Allies invaded Normandy and forced Germany to surrender. C. The Japanese began attacking the United States in California. D. Germany invaded Russia and fought a war on two fronts.
The turning point in World War II was when the Japanese bombed pearl Harbor and the United States fully mobilized and prepared to enter the war, so the correct answer would be A. The United States and Russia joined the war.
