What Happened
September 11 brought grief, courage, service, and national unity in the face of attack. The aftermath changed security, foreign policy, military service, public memory, and the lives of families across the country.
Why It Matters
For modern American history, 9/11 is a dividing line: before and after.
Worth Knowing
The National September 11 Memorial now preserves the names and memory of those killed in the attacks.
Where It Fits in the America 250 Book
This story appears in Chapter 9, Pages 131-132, as part of the 160-page landscape collector edition. The book expands timeline moments like this with archival imagery, maps, concise narrative context, and feature spreads designed for browsing and display.
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September 11 timeline9/11 historymodern American history