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Britain
Britain and Belgium had a treaty to support each other if they were attacked. in 1914, Germany attacked France by moving through Belgium. Britain told Germany to retreat. -
Russia
During World War I, approximately 200,000 German soldiers and 2.5 million soldiers from the Austro-Hungarian army entered Russian captivity. During the 1914 Russian campaign the Russians began taking thousands of Austrian prisoners. -
France
France entered World War I on August 3, 1914, when Germany declared war. France played only a small part in the diplomatic crisis of July 1914–its top leaders were out of the country from July 15 to July 29, when most of the critical decisions were taken. ... The Germans had attacked them. -
United States
Although World War I began in 1914, the United States did not join the war until 1917. The impact of the United States joining the war was significant. The additional firepower, resources, and soldiers of the U.S. helped to tip the balance of the war in favor of the Allies.