Question

Who was the first American explorer to cross Oklahoma?

Answer 1

Hernando de Soto a Spanish explorer and conquistador who led the first European expedition deep into the territory of the modern-day United States, and the first documented to have crossed the Mississippi River.

Answer 2

Is Hernando de Soto an American? @Kittymeowb

Answer 3

No he was a Spanish explorer from Jerez de los Caballeros, Spain or that's where he was born.