Idaho Social Studies 9-12.US2.5

Social StudiesGrades 9–12United States History II

The Standard

Explain the factors that led to World War One and describe the factors that were deterring the United States from involvement as well as the driving forces that eventually led to the United States' involvement.

Idaho Content Standards: K-12 Social Studies · World War I, 1915-1919

Teacher's field guide

What This Standard Means

What Students Need to Do

Students explain how alliances, nationalism, imperial rivalry, and military buildup helped turn a Balkan crisis into a wider war. They explain why the United States stayed out at first and what pushed it to enter in 1917.

What Mastery Looks Like

Students can place the assassination of Archduke Franz Ferdinand, the spread of the war, and key events leading to U.S. entry in order. They can explain reasons for both neutrality and entry without claiming the 1915 Lusitania sinking brought the United States into the war immediately.

Common Misconceptions

Students may treat the assassination as the only cause of the war, rather than the event that set off existing tensions. Some think the Lusitania sinking caused immediate U.S. entry, or that neutrality meant the United States had no economic ties to the Allies.

How to Assess It

Exit ticket: Name two factors that widened the war in Europe, one reason the United States stayed out, and two events that pushed it to enter in 1917.

Lesson moves

Ways to Teach It

  1. Give pairs event cards to sort under three headings: causes of war, reasons for U.S. neutrality, and reasons for U.S. entry.

  2. Ask students to write: Why did the United States stay neutral after the Lusitania sank but enter after renewed submarine attacks?

  3. Play a timeline relay with event cards from 1914 to 1917; teams place each card and explain one choice.

  4. Read a news article on U.S. aid to Ukraine; compare its reasons for involvement with U.S. arguments about entering World War I.

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