That depends which view you take. The official reason is that they were expanding forces and waiting until they had the highest chance of success. It is also suggested that they waited that long in order for the German army to be weakened by the USSR and so the USSR sustained higher casualties, thus weakening them post-war.
they hoped that Germany and the Soviet Union would cripple each other
Teheran
D-Day in June 6,1944.
Stalin was upset with the Western Allies' decision to focus on North Africa during World War II because he believed it delayed the opening of a second front in Europe, which he felt was crucial to relieve pressure on the Soviet Union fighting against Nazi Germany. He feared that by prioritizing North Africa, the Allies were allowing German forces to regroup and strengthen their position on the Eastern Front. Stalin's frustration was compounded by the heavy toll the Soviet Union was suffering in terms of casualties and resources. He wanted immediate action to support the Soviet efforts and weaken German forces directly in Europe.
Josef Stalin, leader of the Soviet Union
Rome and allies versus Carthage, and the Western Europe people at the centre of the contest.
The Axis Powers in Europe formally surrendered to the Allied Forces.
By opening a second front the Allies would be able to draw off German strength from the Eastern Front and help relieve pressure upon the Russians .
The allies were desperate as the German force threatened to overwhelm all of Europe. Additionally, the Soviets needed the creation of a "Second Front" to relieve pressure on the eastern front. Without a successful operation, the allies may not have been able to get all the necessary supplies and troops into Mainland Europe.
Western Europe has been involved in more foreign affairs than Eastern Europe. As well, during the second World War, Eastern Europe was mostly Axis, while Western Europe was mostly Allies.
Western Europe has been involved in more foreign affairs than Eastern Europe. As well, during the second World War, Eastern Europe was mostly Axis, while Western Europe was mostly Allies.
The Battle of the Atlantic ensured the shipping of war materials to Europe by the Allies. It was the longest military campaign of the Second World War.