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What was World War I?

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Quick answer

World War I (1914–1918) was a global conflict centered in Europe that drew in the world's great powers. Sparked by the assassination of Archduke Franz Ferdinand, it introduced industrial-scale warfare and reshaped the modern world. Triggered in 1914 by the assassination of Archduke Franz Ferdinand, amid tangled alliances.

Key things to understand

  1. Triggered in 1914 by the assassination of Archduke Franz Ferdinand, amid tangled alliances.
  2. It pitted the Allied Powers against the Central Powers.
  3. New weapons — machine guns, tanks, poison gas — made it devastatingly lethal.
  4. It ended in 1918 and redrew borders, sowing seeds for World War II.

People also ask

What caused World War I?
A mix of nationalism, militarism, imperial rivalry, and alliances, triggered by the 1914 assassination of Archduke Franz Ferdinand.
Who fought in World War I?
The Allied Powers (including Britain, France, Russia, later the US) against the Central Powers (Germany, Austria-Hungary, the Ottoman Empire).
How did World War I end?
With the armistice of November 1918 and the Treaty of Versailles in 1919.