Before revision: Overland exploration of the West 16th to 17th centuries There were numerous Spanish explorers and conquistadors who explored the Southwest of North America (including present-day west and central United States) and crossed the continent (east to west) in its southern regions, mainly from the second quarter to the middle of the 16th century, such as Álvar Núñez Cabeza de Vaca and Francisco Vásquez de Coronado, but also the North American Southeast and south-central regions.
After revision: Overland exploration of the West 16th to 17th centuries There were numerous Spanish explorers and conquistadors who explored the Southwest of North America (including present-day west and central United States) and crossed the continent (east to west) in its southern regions, mainly from the second quarter to the middle of the 16th century, such as Álvar Núñez Cabeza de Vaca and Francisco Vázquez de Coronado, but also the North American Southeast and south-central regions.