🇺🇸ap us history review

World War One (WWI)

Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated August 2025

Definition

World War One, also known as the Great War, was a global conflict that lasted from 1914 to 1918, involving many of the world's great powers and resulting in significant political, social, and economic upheaval. The war is marked by trench warfare, massive casualties, and the use of advanced weaponry, leading to profound changes in the political landscape of Europe and the world.

5 Must Know Facts For Your Next Test

  1. The war began on July 28, 1914, following the assassination of Archduke Franz Ferdinand of Austria-Hungary.
  2. WWI saw unprecedented levels of destruction, with an estimated 16 million deaths and millions more wounded.
  3. Trench warfare characterized much of the fighting on the Western Front, leading to a stalemate and horrific living conditions for soldiers.
  4. The United States joined the war in 1917 due to factors like unrestricted submarine warfare and the Zimmermann Telegram.
  5. The war fundamentally altered global politics, leading to the collapse of empires such as the Austro-Hungarian and Ottoman Empires.

Review Questions

  • How did the assassination of Archduke Franz Ferdinand trigger a series of events that led to World War One?
    • The assassination of Archduke Franz Ferdinand in June 1914 acted as a catalyst for World War One by setting off a chain reaction of alliances and mobilizations. Austria-Hungary's declaration of war on Serbia prompted Russia to mobilize in defense of Serbia. This sequence triggered a web of alliances; Germany supported Austria-Hungary while France backed Russia, ultimately drawing in numerous nations into a full-scale war. The assassination highlighted the tensions in Europe, particularly nationalism and militarism, which contributed significantly to the outbreak of hostilities.
  • Analyze how trench warfare impacted soldiers' experiences during World War One.
    • Trench warfare had a profound impact on soldiers' experiences during World War One by creating grueling conditions characterized by muddy trenches, disease, and constant danger. Soldiers faced extreme psychological stress due to relentless artillery fire and the threat of enemy attacks. The lack of proper sanitation and shelter led to horrific health issues like trench foot and infectious diseases. This style of warfare resulted in high casualty rates with minimal territorial gains, fostering a sense of futility among troops and contributing to anti-war sentiments in later years.
  • Evaluate the long-term consequences of World War One on global politics and society.
    • World War One had lasting consequences on global politics and society that reshaped the 20th century. The war led to the dismantling of empires such as the Austro-Hungarian and Ottoman Empires, paving the way for new nation-states and nationalist movements. The Treaty of Versailles imposed harsh reparations on Germany, fostering resentment that contributed to World War Two. Additionally, the social upheaval caused by wartime experiences catalyzed changes such as women's suffrage movements and shifts in class structures. The war also set a precedent for future conflicts through its technological advancements in warfare.

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