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Causes of the First World War

Driving Question: What caused World War I?

Military forces grew, alliances solidified, and tensions rose across continents. When war finally came, it was no accident; it was the result of systems pushed to the breaking point.

Learning Objectives:

  1. Use the historical thinking practice of contextualization to understand the time, place, and circumstances under which the First World War began.
  2. Use the historical thinking practice of causation to evaluate the factors that led to the outbreak of World War I.
  3. Use image-analysis skills to assess how propaganda was used in World War I.
STEP 1

Opener: Causes of the First World War

Teaching Tools

Curious about what other teachers are doing with maps? The Community thread How do you use maps in your classroom? External link has great ideas!

STEP 2

A War to End All Wars

Teaching Tools

Use the Three-Step Reading Worksheet to help evaluate what kinds of supports students need in unpacking texts.

Unpack the tangled web of alliances, rivalries, and political choices that led to war in 1914. This section helps you sort through long-term causes and immediate sparks.

STEP 3

The First World War

Teaching Tools

Want to throw yarn but feel like it might get unruly? Learn how other teachers have approached Our Interconnected World: WWI External link in this Forum thread.

World War I didn’t stay confined to Europe. Explore how deeply interconnected the world already was by 1914, and how those connections turned a regional crisis into a global war.

STEP 4

Closer: Causes of the First World War

Teaching Tools

There are a lot of posters to analyze here. Consider using the Three-Step Reading with students to “read” visuals: First, get the big picture. Then, zoom in on details. Finally, think about what the image means. Page 3 of our Reading Guide spells it out.

Now that you've explored the causes of World War I, take a closer look at how those causes were communicated to the public. Propaganda posters reveal what leaders wanted people to believe—and why.

Extension Materials
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Examine a range of sources to better understand the emotional and human impact of the First World War.