History Today: How the course of World War I changed after British ship 'Lusitania' sank

One of the most important incidents of World War I took place on May 7, 1915, when the British ocean liner, RMS Lusitania, was hit by a German submarine. It killed nearly 1,200 people, of whom 128 were Americans. On this day in 1945, Germany unconditionally surrendered all German forces to the Allies at Reims, northern France, leading to the war officially coming to an end

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