for German military strategists, the entry of the united states into the war in April 1917 meant that Before a large American force could arrive in Europe, they would have to defeat France and Britain.
World War I, also known as the First World War and referred to as the "Great War" or "War to End All Wars" by some Anglophone authors, was a global conflict that lasted from 1914 to 1918 and is regarded as one of the deadliest conflicts in history.
The assassination of Austrian Archduke Franz Ferdinand on June 28, 1914, was the primary impetus for the outbreak of World War I.
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