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World War I started on July 28 1914 – Fact Check

Question asked:

“World War I started on July 28, 1914.”
True
Confidence: High Checked on November 9, 2026

Summary

World War I began on 28 July 1914 when Austria‑Hungary declared war on Serbia, marking the start of the conflict. This date is consistently recorded in historical references and reputable sources.

Sources 60 searched

sjmc.gov.au
guides.loc.gov
loc.gov
open.edu
en.wikipedia.org
  • July Crisis - Wikipedia

    The July Crisis was a series of interrelated diplomatic and military escalations among the major powers of Europe in mid-1914, which led to the outbreak of World War I. It began on 28 June 1914 when the Bosnian Serb nationalist Gavrilo Princip assassinated Archduke Franz Ferdinand, heir presumptive ...

  • World War I - Wikipedia

    World War I, or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a global conflict between two coalitions: the Allies (or Entente) and the Central Powers. One of the deadliest conflicts in history, World War I caused 15 to 22 million deaths, including ...

zinnedproject.org
theworldwar.org
  • Key Dates | National WWI Museum and Memorial

    Germany declares war on Russia, France and Belgium. Britain declares war on Germany. Austria-Hungary declares war on Russia. France and Britain declare war on Austria-Hungary. Japan declares war on Germany. Austria-Hungary declares war on Belgium.

history.com

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