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SlideshowReport

A Global Bloom: Cities With Over One Million Residents

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Description
The world has about 500 cities with more than a million residents. Behind this urban surge lies the Industrial Revolution, which not only drew people to cities by providing work but also stimulated rapid transportation and communication. These, in turn, allowed the efficient movement of people, resources, products, and, especially today, information—essential factors (called infrastructure) that allow large cities to exist.
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