What did the washington conference of 1921 accomplish? the proclamation that nations would no longer employ war as an instrument of national policy the entry of the united states into the league of nations a plan to reduce european war debts the reduction of the naval fleets of the united states, japan, and several european nations?

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

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