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World War I and II: Causes and Impact

📑 5 slides 👁 15 views 📅 2/15/2026
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Introduction to World Wars

World War I (1914-1918) and II (1939-1945) were global conflicts involving many nations.

Introduction to World Wars
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Causes of World War I

  • Assassination of Archduke Franz Ferdinand triggered the war in 1914.
  • Alliance systems divided Europe into opposing groups (Allies vs Central Powers).
  • Militarism led to arms race among nations like Germany and Britain.
  • Imperialism created tensions over colonies and resources.
Causes of World War I
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Causes of World War II

  • Treaty of Versailles (1919) harshly punished Germany, fueling resentment.
  • Rise of dictators like Hitler (Germany) and Mussolini (Italy) in the 1930s.
  • Economic depression made people support extreme leaders promising change.
  • Japan's expansion in Asia and Germany's invasion of Poland started WWII.
Causes of World War II
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Major Events and Impact

  • WWI introduced trench warfare and new weapons like tanks and poison gas.
  • WWII saw the Holocaust, atomic bombs, and battles like D-Day and Stalingrad.
  • Both wars led to new technologies, such as airplanes and radar.
  • United Nations formed after WWII to prevent future conflicts.
Major Events and Impact
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Conclusion and Legacy

  • World Wars reshaped borders, ending empires and creating new nations.
  • Lessons learned: importance of diplomacy and international cooperation.
  • Today, we remember the wars to honor victims and prevent future conflicts.
  • Key takeaway: peace is built through understanding and teamwork.
Conclusion and Legacy
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