Serangan 11 Sèptèmber 2001: Béda antara owahan

The destruction caused serious damage to the economy of Lower Manhattan.[7] Cleanup of the World Trade Center site was completed in May 2002. The National September 11 Memorial & Museum is scheduled to open on September 11, 2011. Adjacent to the memorial the 1,776 feet (541 m) One World Trade Center is estimated for completion by 2013.[8] The Pentagon was repaired within a year, and the Pentagon Memorial opened, adjacent to the building, in 2008. Ground was broken for the Flight 93 National Memorial in November 2009, and the memorial was formally dedicated on September 10, 2011.[9][10]

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