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  1. World War I: Summary, Causes & Facts | HISTORY

    Oct 29, 2009 · World War I started in 1914, after the assassination of Archduke Franz Ferdinand, and ended in 1918. During the confl...

  2. World War I: Causes and Timeline | HISTORY

    World War I was fought from 1914 to 1918. Learn more about World War I combatants, battles and generals, and what cau...

  3. World War I Timeline: Battles & Major Events | HISTORY

    Apr 8, 2021 · This World War I timeline of battles outlines the most important engagements of the 1914-1918 war, from the first Bat...

  4. 8 Events that Led to World War I - HISTORY

    Apr 6, 2021 · Imperialism, nationalistic pride and mutual alliances all played a part in building tensions that would erupt into war.

  5. Why Did the US Enter World War I? | HISTORY

    Apr 6, 2017 · The United States entered World War I in 1917, following the sinking of the British ocean liner Lusitania and the sho...

  6. Armistice Day: World War I ends | November 11, 1918 | HISTORY

    Mar 10, 2010 · At the 11th hour on the 11th day of the 11th month of 1918, World War I ends. At 5 a.m. that morning, Germany signed ...

  7. Why World War I Ended With an Armistice Instead of a Surrender

    Oct 31, 2018 · On the 11th hour of the 11th day of the 11th month of 1918, fighting in World War I halted-but it would not be until ...

  8. How Many People Died in World War I? - HISTORY

    Apr 19, 2023 · Major powers such as Britain, France, the U.S. and Germany kept detailed records of the war’s human cost. But the carnage of World War I was so extreme and pervasive, and involved …

  9. How Imperialism Set the Stage for World War I | HISTORY

    Mar 7, 2022 · Many of the powers in World War I were competitive in overtaking territories in Europe and Africa.

  10. Austria-Hungary issues ultimatum to Serbia - HISTORY

    Oct 28, 2009 · Acting with the full support of its allies in Berlin, Austria-Hungary had determined in the aftermath of Franz Ferdinand’s assassination to pursue a hard-line policy towards Serbia. Their plan ...