When was world war 1

          World war 1 countries

        1. World war 1 countries
        2. Who won world war 2
        3. Who won world war 1
        4. When was world war 2
        5. World war 2 start date

          6. Who won world war 1...

          World War I

          World War I

          (Clockwise from the top)
          Date28&#;July&#;&#;– 11&#;November&#;&#;(&#;– )
          (4&#;years, 3&#;months and 2&#;weeks)

          Peace treaties

          • Treaty of Versailles
            Signed 28 June
            (4&#;years and 11&#;months)[a]
          • Treaty of Saint-Germain-en-Laye
            Signed 10 September
            (5&#;years, 1&#;month, 1&#;week and 6&#;days)
          • Treaty of Neuilly-sur-Seine
            Signed 27 November
            (4&#;years, 1&#;month, 1&#;week and 6&#;days)[b]
          • Treaty of Trianon
            Signed 4 June
            (5&#;years, 10&#;months and 1&#;week)
          • Treaty of Sèvres
            Signed 10 August
            (6&#;years, 1&#;week and 6&#;days)[c]
          • United States–Austria Peace Treaty
            Signed 24 August
            (3&#;years, 8&#;months, 2&#;weeks and 3&#;days)[d][e]
          • United States–Germany Peace Treaty
            Signed 25 August
            (4&#;years, 4&#;months, 2&#;weeks and 5&#;days)[f]
          • United States–Hungary Peace Treaty
            Signed 29 August
            (3&#;years, 8&#;months, 3&#;weeks and 1&#;day)[g]
          • Treaty of Lausanne