Coronado.
tha spandriands
In 1706.
Spain.
If you mean what European power first explored and settled Mexico during the Age of Exploration, Spain qualifies as such.
he explored for new mexico
Portugal explored the New World first
Since it was first explored in 1533
When Francisco Vazquez de Coronado first explored these lands, on 1542.
He Explored the new world (Mexico)
When the territories now comprising the states of Arizona and New Mexico were first explored by Spanish Conquistador Francisco Vazquez de Coronado in 1542, he reported his findings on such territories north of Mexico were a "New Mexico". Since then, these territories were named as the Territorios de Nuevo Mexico(Territories of New Mexico).
He Explored the new world (Mexico)