Template:US state (dis)establishment category by century
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Creates a category of the form "YYth-century establishments in Foo" or "YYth-century disestablishments in Foo", where "YY" is a 2-digit century, and "Foo" is a state of the United States.
The template detects whether this is an "establishments" or "disestablishments" category, and adjusts accordingly.
Usage
{{(Dis)estCatUSstateCentury}}
No parameters are needed.