🇪🇺ap european history review

Start of World War I

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

The Start of World War I refers to the beginning of one of the deadliest conflicts in history, ignited by the assassination of Archduke Franz Ferdinand of Austria on June 28, 1914. This event set off a chain reaction of political alliances and militaristic posturing among European powers, leading to the widespread mobilization of troops and the declaration of war in August 1914. The conflict resulted from a mix of nationalism, imperial ambitions, and intricate alliance systems that had developed in the years preceding the war.

5 Must Know Facts For Your Next Test

  1. The assassination of Archduke Franz Ferdinand occurred in Sarajevo, Bosnia, by Gavrilo Princip, a member of a nationalist group seeking independence for Slavic peoples from Austro-Hungarian rule.
  2. Following the assassination, Austria-Hungary issued an ultimatum to Serbia with demands that were partly unacceptable, leading to Serbia's partial acceptance and Austria-Hungary's declaration of war.
  3. Germany declared war on Russia on August 1, 1914, after Russia began mobilizing its army to support Serbia, prompting other nations to declare war due to existing alliances.
  4. The Schlieffen Plan was Germany's military strategy to quickly defeat France by invading through Belgium before turning east to fight Russia; this plan contributed to the rapid escalation of the conflict.
  5. The war quickly expanded beyond Europe as colonies and allied nations around the world became involved, turning it into a global conflict with far-reaching consequences.

Review Questions

  • How did the assassination of Archduke Franz Ferdinand serve as a catalyst for the Start of World War I?
    • The assassination of Archduke Franz Ferdinand was pivotal because it triggered a series of political and military responses among the major European powers. Austria-Hungary's anger led it to issue an ultimatum to Serbia, which escalated tensions further. When Serbia's response failed to satisfy Austria-Hungary, it declared war, leading Russia to mobilize in support of Serbia. This event unleashed a web of alliances that rapidly drew multiple countries into the conflict.
  • Evaluate the impact of the existing alliances on the escalation of hostilities at the Start of World War I.
    • The existing alliances significantly exacerbated tensions following the assassination. The Triple Alliance and Triple Entente created a precarious balance where a conflict involving one nation quickly involved others. For example, Germany's alliance with Austria-Hungary meant it was obligated to support its ally against Serbia and Russia. As declarations of war rolled out due to these alliances, what began as a regional conflict spiraled into a full-scale global war.
  • Assess how nationalism and militarism influenced the political climate leading up to the Start of World War I.
    • Nationalism and militarism played crucial roles in creating an environment ripe for conflict before World War I. Nationalist sentiments fueled rivalries among European nations as they sought to assert dominance and expand their empires. This was coupled with militarism, where nations prioritized military preparedness and viewed war as an acceptable means to resolve disputes. Together, these forces fostered aggressive postures and arms races that made war not only likely but almost inevitable when crises arose, such as after the assassination of Franz Ferdinand.

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