Four Colors Suffice
So say the mathematicians
at the University of Illinois.
Equations worked late into the night
over vending machine meals
have proved it.
No matter how complex the politics
or how irregular the borders,
cartographers can open
just four pots of color
(including blue for the sea)
without fear of Mexico and Texas
coming up an identical adjacent pink.
So little suffices
to keep us apart.
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