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  1. September 11 attacks - Wikipedia

  2. September 11 attacks | History, Summary, Location, Timeline, …

  3. September 11 Attacks: Facts, Background & Impact | HISTORY

  4. September 11 attacks: What happened on 9/11? - BBC News

  5. How the September 11 attacks unfolded | Britannica

  6. September 11 attacks Facts | Britannica

  7. 9/11 Memorial Timeline - National September 11 Memorial

  8. September 11, 2001: Attack on America | HISTORY Channel

  9. Timeline: The September 11 terrorist attacks | Miller Center

  10. 9/11 Timeline - Videos, World Trade Center Attacks | HISTORY