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and in every community
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in the United States you will find a set of deed
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and a corresponding set of maps similar to this one.
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I'll dissect this and enlarge parts of it and so on as we go.
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You'll find these maps are quite ubiquitous.
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Now this one has the peculiarity that in some parts
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of the city they've drawn in the buildings
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and it turns out that that's--
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that has happened where there is
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a wealthy institution that paid to have it done,
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familiar to all of us and not where there isn't
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a wealthy institution that would pay to have it done.