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On September 11, 2001, two planes flew into the World Trade Center in New York City, and two other planes crashed, one into the Pentagon and another into a deserted field. More Americans died from this disaster than at Pearl Harbor in 1941. The 9/11 Commission was established to investigate the causes of the disaster and to make recommendations for the future to improve American security. These recommendations have influenced and continue to influence American intelligence, foreign policy, and national security. This entry discusses the creation of the commission and its findings and recommendations.

The Members and Mandate of the Commission

When Pearl Harbor was attacked, President Franklin Roosevelt appointed a commission 9 days later to investigate the assault, and the Warren Commission was created 7 days ...

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