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The attack on the World Trade Center on September 11,
2001, traumatized New York City and the nation. Almost
3,000 lives were lost, and more than 30 million square feet of
office space in Lower Manhattan was damaged or destroyed.
The loss of workers, physical capital, and infrastructure reduced
the productive potential of the city’s economy and disrupted
the lives of hundreds of thousands of people. Damage to the
transportation and communications infrastructure depressed
economic activity for a number of months, especially in Lower
Manhattan.
