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Comment by peteretep | Hacker News Reader

    > For what plausible reason
    > would you invade and occupy
    > a city with a population of
    > over 10 million?

Of your list, what, 50% have been occupied in the last 100 years?

I wonder how much did they have population back then?

I would reckon not all (even most?) on the list had +10million inhabitants 100 years ago.

Wikipedia claims that "In 1950, New York City was the only urban area with a population of over 10 million."

Even today, NYC's Five boroughs are <9 Million[0].

1920 Tokyo: 3.7 million[1]

1950 Shanghai: 6.2 million[2]

1971 Mumbai: 5.9 million[3]

1921 Greater London: 7.5 million[4]; Inner London: 4.9 million

Terms like Metro-area and Megalopois are different stories...