Hernando de Soto explored America for a seaway to China to trade Spain's New World gold. He followed trails which we use as highways. Spain's records describe Natives along those trails at places that are cities again today. Conquest Trails thru Fourteen States are presented here.
Spanish armies were not sent deep into America after DeSoto and Coronado. That is reason enough to suppose that they searched a majority of North America, given that Spain explored and/or colonized ALL of the NEW WORLD elsewhere.1,700,000 visitors last year!