The greatest and destructive war in the history of the mankind was fought between 1939 and 1945 in which all major countries were involved to prove their superiority over the other.
II World War included struggles not only in Europe but also in Asia, Africa and islands of Pacific Oceans as well.
The course of the war strained the economies of major countries and left them on the verge of collapse.
More than once chances did come in the way of the other powers to prevent the war but they failed to grab it.
The conservatives of France and Britain for a long time believed that Hitler was interested only in putting down communism and breaking the power of labour organizations. They ignored the real motives of Hitler to regain supremacy of Germany.