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Franz Ferdinand wanted to visit the wounded in the hospital, but the drivers were confused about the route. When the archduke's car turned the wrong way, it was right in front of Gavrilo Princip, another conspirator. He shot Franz Ferdinand and Sophie, and they both died soon afterward.
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A celebration for the opening of the Panama Canal what was called for a fleet of international warships to go through the canal in the beginning of 1915.
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The French victory in robbing Germany of its planned rapid defeat of France during World War I and resulted in four years of trench warfare outside Paris.
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British stores that could not be removed from Gallipoli burn on the shores of Suvla Bay in 1915.
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Turkish officials arrested Armenian leaders and deporting them to Anatolia and murdering them.
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The Lusitania was sunk by a German submarine off the coast of Old Head of Kinsale, Ireland on May 7, 1915. The ship sank in 18 minutes and 1,198 of the 1,959 passengers and crew aboard perished.
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A torpedo struck the British passenger liner Lusitania and killed 128 Americans. The German government promised to give warning to passenger ships before firing on them; it hoped to avoid direct American intervention on the side of the Allies
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The German failure to take the great French fortress of Verdun meant a continuation of the war and came to symbolize the incredible will of the French in resisting the invading German Army.
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The Allied armies launched their offensive on July 1 with a direct assault on 21 miles of entrenched German positions north of the Somme River in northern France. Because the German Army's fortified trenches were so secure, the attacking Allied troops, most of them British, were gunned down by the thousands.
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Command decided to resume unrestricted submarine warfare, as it believed that Germany could win the war against the exhausted Allies before the United States could bring its full force to bear in the conflict.
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Arthur Zimmermann sent a telegram to the German minister to Mexico stating Germany's intention to reinitiate unlimited submarine warfare on the world's oceans in an attempt to bring World War I to a close.
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In the October Revolution (November by the Western calendar), the Bolsheviks led by Vladimir Lenin organized a variety of armed workers, soldiers, and sailors who seized government buildings and the Winter Palace in Petrograd without much opposition
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The Treaty of Brest-Litovsk ended Russia getting into World War I. The treaty released Germany from the pressures of fighting a two-front war, it was too late to prevent the Germans to the Allies on the Western Front later during year.
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The Allied attack had completely regained all the territory lost to the Germans in their third offensive in May and June, and the German Army from that point onward was completely on the defensive.
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The United States formally entered World War II by declaring war on Japan, just one day after the Japanese had bombed U.S. naval forces at Pearl Harbor, Hawaii in a surprise attack. Three days later, Germany and Italy declared war on the United States, as they were bound to do because of their treaty agreements with Japan.
