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And if we don't take the proper procautions and all of a sudden we have 5000 centaurs claiming their independence in America, what do we do then?

You pack your bags and get out of the newly Independent State Of Centauria, that's what you do !

Amazing. I would support Centauria xD

They'd probably let you stay... on their free-range human reservation XD

I'd tame one and it could be my mount, and we'd be magically transported to 99% of modern DnD games.

Inevitable war?