September 11, 2001Reputable source · 2 sourcesWell documented
The September 11 attacks
On the timeline · around September 11, 2001 ·
What happened
Hijacked airliners destroyed the World Trade Center and struck the Pentagon; passengers forced down a fourth plane in Pennsylvania. Nearly 3,000 people were killed.
Why it matters
It reshaped American foreign policy, security, and daily life for a generation.
Sources
- 9/11 Memorial & Museum. 9/11 FAQs · General source
- US National Park Service. Flight 93 National Memorial · Reputable source