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The Twenty-One Demands were a set of demands made during the First World War by the Empire of Japan to the government of the Republic of China.
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First German use of poison gas at Bolimow on the Eastern front
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German U-boats attack Allied shipping. Germany declares a blockade on Britain. All ships traveling throught the "war zone" could be attacked by German U-boats.
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First use of poison gas by the Germans in the Western Front. Ended in stalemate.
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British land troops at Gallipoli.
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A series of battles between the British and Ottomons for the peninsula of Gallipoli.
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The Treaty of London was a secret pact between the Triple Entente and the Kingdom of Italy.
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Germans attack and sink the Lusitania, with Americans on board, this leads to U.S. entry into the war.
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As the Russians retreated after the Garlice-Tarnow offensive they committed many atrocities against civilians and enemy nations around the area.
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A major British offensive against the Germans. Attempt to break the defensive lines and create another war of movement. British victory.
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French offensive to break through German defensive. Eventually the Germans are able to repel the attack and the French abandon their attack. First time Britain used poison gas.
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Germany and Austria-Hungary invade Serbia.
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Sir Douglas Haig replaces Sir John French as the commander of the British Expeditionary Forces