Poland, for its part, had guarantees of French and British military support should it be attacked by Germany. Axis initiative and Allied reaction The outbreak of warīy the early part of 1939 the German dictator Adolf Hitler had become determined to invade and occupy Poland. It resulted in the extension of the Soviet Union’s power to nations of eastern Europe, enabled a communist movement to eventually achieve power in China, and marked the decisive shift of power in the world away from the states of western Europe and toward the United States and the Soviet Union.

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