World War I
Modern Era
World War I
World War I was called 'The Great War' because it was the biggest conflict the world had ever seen. Millions of soldiers fought in trenches, and new weapons made it very deadly. The war changed the world and led to problems that caused World War II.
Time Period
1914 - 1918 CE
Era
Modern Era
Key Events
5
Quick Facts
World War I killed more soldiers than any war before it
Soldiers in trenches faced constant danger from bullets, shells, and poison gas
The first tanks were used in World War I at the Battle of the Somme
The USA entered the war in 1917, which helped Britain and France win
Timeline
War Begins
1914 CEThe assassination of Archduke Franz Ferdinand starts World War I when Austria-Hungary declares war on Serbia.
Trench Warfare
1915 CESoldiers dug trenches and fought face-to-face. Millions died trying to gain small pieces of land.
USA Enters War
1917 CEThe United States joins the war on the side of Britain and France, bringing fresh troops and resources.
War Ends
1918 CEGermany surrenders, and the war ends. About 20 million people died in the fighting.
Treaty of Versailles
1919 CECountries sign a peace treaty, but many problems from the treaty will cause future conflicts.
World War I: A Complete Summary
Essential information written in simple language
What Happened?
World War I lasted four years and killed about 20 million people. It was fought mainly in Europe between two groups of countries. One side was led by Britain, France, and Russia. The other side was led by Germany and Austria-Hungary. New weapons like tanks, poison gas, and airplanes made it deadlier than any war before.
Why Did It Start?
European countries had built huge armies and wanted power. They formed alliances with each other. When Archduke Franz Ferdinand was killed in 1914, these alliances caused all the major countries to join the war, one by one.
Important People Involved
- •Kaiser Wilhelm II (German emperor)
- •George V (British king)
- •Woodrow Wilson (US president)
- •Lenin (Russian leader)
What Happened During This Event?
Soldiers fought in trenches - long ditches dug into the ground. Millions died trying to gain just a few miles of land. Poison gas and machine guns killed soldiers in huge numbers. Tanks and airplanes were used for the first time. People back home supported the war effort by making weapons and supplies.
What Happened After?
Germany lost and had to sign the Treaty of Versailles. The treaty punished Germany badly, making them pay huge amounts of money and give up land. These punishments made German people angry. This anger led to World War II just 20 years later. The world had to learn hard lessons about making peace.
Visual History: World War I
Historical imagery showing key moments from World War I
Historical imagery showing key moments from World War I
Historical imagery showing key moments from World War I