How did allies were able to stop the German and the japnese forces?

The Allies were able to stop German forces through a combination of strategic military campaigns, including the successful D-Day invasion in 1944, which allowed them to regain control of occupied Europe. They also leveraged superior industrial capacity and coordinated efforts among the United States, Britain, and the Soviet Union. In the Pacific, the Allies implemented a strategy of island-hopping, capturing key islands and cutting off Japanese supply lines, culminating in decisive victories like the Battle of Midway. These coordinated efforts, along with the eventual use of atomic bombs, led to the surrender of Japan in 1945.