Instructions
- Read through each section carefully. You are a historical investigator, and this is your case file on World War I.
- Complete the activities in each part to uncover the facts about the "Great War."
- Use the clues and information provided in each section to answer the questions.
- Take your time and think like a detective. Good luck!
Part 1: The Case of the Four "Isms" - Cracking the Causes
World War I didn't start for just one reason. Historians often use the acronym M.A.I.N. to remember the four long-term causes. Your first task is to match each cause to its correct definition.
Draw a line connecting the cause on the left to its definition on the right.
| 1. Militarism | A. The belief that your country is the best, leading to intense competition and rivalry with other nations. |
| 2. Alliances | B. When a country builds up its armed forces (army, navy, weapons) and is willing to use them to achieve its goals. |
| 3. Imperialism | C. When countries agree to support and defend each other, which can pull many nations into a small conflict. |
| 4. Nationalism | D. When powerful countries try to build an empire by taking over weaker countries for their resources and land. |
Part 2: Choosing Sides - The Alliances
The alliance system divided Europe into two armed camps. Your next task is to sort the following countries into the correct alliance they belonged to at the start of the war in 1914.
Country List: Germany, France, Great Britain, Austria-Hungary, Russia, Ottoman Empire
| The Allied Powers (The Triple Entente) | The Central Powers (The Triple Alliance) |
|---|---|
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Part 3: A Letter from the Trenches
Millions of soldiers fought in long, muddy ditches called trenches. Read this fictional letter from a soldier and answer the questions that follow.
October 12, 1916
Dearest Mother,
The rain has not stopped for three days. Everything is mud. My boots are soaked through, and the rats are the size of cats. We spend hours waiting, just listening to the distant rumble of artillery. The space between our trench and the enemy's is called "No Man's Land," and it is a terrifying place. We try to keep our spirits up by sharing stories and singing songs, but it is hard. I miss the taste of your apple pie more than anything. I hope this war ends soon.
Your loving son,
Thomas
- Based on the letter, list three challenges soldiers faced in the trenches.
- _______________________________________________________________
- _______________________________________________________________
- _______________________________________________________________
- What is the name for the area between two enemy trenches?
____________________________________________________________________
- How did soldiers like Thomas try to cope with the difficult conditions?
____________________________________________________________________
Part 4: The Tipping Point - Why did the USA join the war?
The United States stayed neutral for the first three years of the war. Your task is to investigate two key events that led to the U.S. declaring war on Germany in 1917. Use your knowledge (or a quick search!) to briefly explain each one.
Event 1: The sinking of the Lusitania (1915)
What was it, and why did it make Americans angry?
Event 2: The Zimmermann Telegram (1917)
What was this secret message about?
Part 5: The Aftermath - Thinking Critically
The war ended on November 11, 1918. It changed the world forever. Answer the following question with a thoughtful response.
How do you think World War I might still affect our world today? Think about technology, borders of countries, or how nations interact with each other.
⚹ Challenge Zone (Optional) ⚹
WWI is often called the first "modern war." Research one new technology that was used for the first time in WWI (like tanks, airplanes, or poison gas) and explain how it changed warfare.
Technology: ___________________________________
How it changed warfare:
Answer Key
Part 1: The Case of the Four "Isms"
- 1. Militarism → B. When a country builds up its armed forces...
- 2. Alliances → C. When countries agree to support and defend each other...
- 3. Imperialism → D. When powerful countries try to build an empire by taking over weaker countries...
- 4. Nationalism → A. The belief that your country is the best...
Part 2: Choosing Sides
| The Allied Powers | The Central Powers |
|---|---|
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Part 3: A Letter from the Trenches
- Challenges: Constant rain/mud, large rats, soaked boots, psychological stress (waiting), fear of artillery/No Man's Land. (Any three)
- Area between trenches: No Man's Land
- How they coped: They shared stories and sang songs to keep their spirits up.
Part 4: The Tipping Point
- The Lusitania: It was a British passenger ship sunk by a German submarine. Over 1,200 people died, including 128 Americans. It angered Americans because it was an attack on civilians.
- The Zimmermann Telegram: It was a secret message from Germany to Mexico, proposing an alliance against the U.S. Germany promised to help Mexico reclaim territory (Texas, Arizona, New Mexico) if it attacked the U.S. The British intercepted it, and its publication outraged Americans.
Part 5: The Aftermath
(Answers will vary but should be thoughtful. Example answer:) World War I led to new technologies like airplanes and tanks becoming standard in warfare. It also led to the fall of old empires (like Austria-Hungary and the Ottoman Empire) and the creation of new countries in Europe and the Middle East, whose borders still cause conflict today. It also led to the creation of international organizations like the League of Nations (and later the United Nations) to try and prevent future wars.
Challenge Zone
(Answers will vary. Example answer:)
Technology: The Tank
How it changed warfare: Before tanks, warfare was stuck in trenches because machine guns made it nearly impossible for soldiers to cross No Man's Land. The tank was an armored vehicle that could withstand machine gun fire and cross difficult terrain like mud and barbed wire. It allowed armies to break through enemy trench lines, making warfare more mobile and ending the stalemate of trench warfare.