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why was world war 1 called the war to end all wars

INTO JAPANESE

第一次世界大戦がなぜ「すべての戦争を終わらせる戦争」と呼ばれたのか

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Why World War I was called "the war to end all wars"

INTO JAPANESE

第一次世界大戦が「すべての戦争を終わらせる戦争」と呼ばれた理由

BACK INTO ENGLISH

Why World War I was called "the war to end all wars"