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National September 11 Memorial
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- 1United States Marks 25th Anniversary of 9/11 Attacks▼A Country in Mourning: the 25th Anniversary of the 9/11 Terrorist Attacks
The United States is commemorating the 25th anniversary of the September 11, 2001 terrorist attacks, with the country described as being in mourning. The milestone anniversary of the attacks, in which nearly 3,000 people were killed in New York, Virginia and Pennsylvania, is prompting renewed reflection and memorial events nationwide.