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Unit 9: Period 9: 1980–Present

Challenges of the 21st Century

Explain how 9/11 led to wars in Afghanistan and Iraq, a security state that tested civil liberties, a fight over oil and climate, and a superpower under strain.

Topic 9.6 · 19 min read

This lesson comes with the AP United States History plan

In this lesson

  1. 01From the attacks to the war in Afghanistan
  2. 02Iraq: a preventive war and its costs
  3. 03Security at home and the fight over civil liberties
  4. 04Oil, war and climate change
  5. 05A superpower under strain
  6. 06Worked examples
  7. 07Where students lose points
  8. 08On the exam

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