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Could an entire neighborhood or even an entire city be that crowded? Sure. Hong Kong's Kowloon Walled City was probably the densest neighbourhood in history, with more than 1,000,000 people per s...
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Could an entire neighborhood or even an entire city be that crowded? Sure. Hong Kong's Kowloon Walled City was probably the densest neighbourhood in history, with more than 1,000,000 people per s...