Why was the battle of El Alamine turning point in the war?

The Battle of El Alamein, which was divided into two parts and took place between July 1 and November 3, 1942, took place in the desert of northern Egypt and faced Italian-German forces against the allies, led by Great Britain. It was the most important battle of the North African Front, because it involved the final withdrawal of the Axis forces from the continent and the final victory of the allies, which began the total control of the Mediterranean Sea and the American participation in the Western Front.