7 dic 1941 año - Grand Alliance Formed

Descripción:

Britain had been at war with Germany since Germany’s invasion of Poland in 1939.
The USSR allied itself with Britain in 1941 when Germany began to invade its territories.
In December 1941, Germany’s ally, Japan, launched a surprise attack on the US naval base at Pearl Harbour on the island of Oahu, Hawaii. This action brought the USA into World War Two on the same side as Britain and the USSR.

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