Foreign City Names in America

Why are some American place names pronounced differently than the famous place they were named after? Why is Cairo, Ill., pronounced "KAY-roh"? Why do Midwesterners pronounce Versailles as "Ver-SALES" and the New Madrid Fault as "New MAD-rid"? Grant explains that these names are far removed from their earlier incarnations and function as a sort of shibboleth among the locals. This is part of a complete episode.