World War I
The Great War saw trench warfare and cost millions of lives.
About this topic
World War I (1914 to 1918) pitted the Allies (France, Britain, Russia, later Italy and the United States) against the Central Powers (Germany, Austria-Hungary, the Ottoman Empire, Bulgaria). On the Western Front, early German advance stalled and became trench warfare, a stalemate of mud, barbed wire, machine guns and artillery stretching from Belgium to Switzerland. Offensives like the Somme and Verdun cost hundreds of thousands of lives for a few kilometres.
New weapons included poison gas, tanks, aeroplanes and U-boats. Germany's unrestricted submarine warfare, which sank the Lusitania in 1915, and the Zimmermann Telegram brought the United States in 1917. Russia left the war after its revolution in 1917, and fresh American troops helped defeat Germany's last offensives. The armistice began on November 11, 1918. About 10 million soldiers and millions of civilians died.
The Treaty of Versailles (1919) made Germany accept blame (the war guilt clause), pay reparations, lose land and limit its army; empires such as Austria-Hungary and the Ottoman collapsed, creating new states. Woodrow Wilson's Fourteen Points and the League of Nations aimed to keep peace. The harsh treaty and resentment helped cause World War II. Misconception: it was called the war to end all wars, but it did not. Example: Christmas truce of 1914 shows human side.
Key ideas
- 1914–1918
- Western Front
- Treaty of Versailles
Quick check
Use cases: where World War I helps
- Homework: review the key idea behind World War I before you start a problem set.
- Exam revision: use the quick check to test whether you can recall World War I without notes.
- Visual learning: play with the interactive lab to see how World War I changes when you adjust its inputs.
- Teaching a friend: explain World War I in your own words, then compare your version with the key ideas.
Studying the past helps explain today’s politics, borders, cultures and institutions.
Frequently asked questions
What is World War I?
The Great War saw trench warfare and cost millions of lives.
What will I learn in World War I?
1914–1918. Western Front. Treaty of Versailles.
Is World War I part of World History?
Yes. It is one of 80 World History topics on LearnViz HighSchoolEdu, with 3 key ideas, a live animation and a quick check.
Does the World War I lab work on a phone or tablet?
Yes. The animation resizes to fit your screen and supports touch, so you can drag, tap and slide with your finger.
How should I study World War I?
Read the summary and key ideas first, play with the interactive lab to see the idea in motion, then answer the quick check. If you get a question wrong, go back to the key idea it tests.
Do I need an account, and is my progress saved?
No account is needed. Marking a topic as learned is saved in your own browser, so it stays on that device and is not sent to a server.