World War I: Causes and Effects

Mission Brief #22

🎯 Your mission

Figure out how this changed the world.

⚡ The twist

The same event looks different depending on who's telling the story.

Read

During World War II (1939–1945), the Allies fought the Axis powers. The conflict affected every continent and led to lasting changes in borders, governments, and cooperation.

Key facts

Remember these

1Cause and effect explain why things happen.
2Oral histories preserve community stories.
3Primary sources come from the time of the event.

Timeline · 1 of 2

When it happened

1914
Archduke Franz Ferdinand is assassinated in Sarajevo
1914
Alliances pull Europe's powers into war
1917
The United States enters the war
1918
An armistice ends the fighting

Timeline · 2 of 2

1919
The Treaty of Versailles is signed

Then & Now

This still shapes laws, borders, and even your school today.

Question 1 of 2

What tool puts events in order?

How sure?😐 maybe

Question 2 of 2

Why do we study history?

How sure?😐 maybe

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You got 0 of 2 right.

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✨ More to explore

🌍 Why this still matters: Every road sign, every flag, every holiday — there's history hiding inside.

🏆 Try this week: Find one historical photo that shocked you. Tell someone about it.

👨‍👩‍👧 At dinner: “What's something from history you wish you could see in person?”

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World War I: Causes and Effects

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