In 1950 there was just one city with a population of more than ten million—New York. In 2015 there will be 21, and the number of urban areas with populations between five and ten million will shoot from 7 to 37. National Geographic Society.
In 1950 there was just one city with a population of more than ten million—New York. In 2015 there will be 21, and the number of urban areas with populations between five and ten million will shoot from 7 to 37. National Geographic Society. |
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