Christopher Columbus was an Italian explorer for Spain landed in the Americas in 1492, He was looking for a faster, and safer route to Asia.
Pineda set out from Jamaica in 1519 to map the coast of the Gulf of Mexico, he became the first European to observe the Texas coast, but sadly did not complete his mission.
Cortes was sent to present day Mexico by the governor of Cuba in 1519,upon arrival the Aztecs viewed Cortes and his men as Gods because of their horses, firearms, and metal armor,eventually they overthrew the Aztecs ,they sent gold and silver back Spain became very rich.
Cabeza de Vaca was exploring Florida but had to sail back to Mexico in 1528. The boats got caught in a hurricane Cabeza de Vaca and his men were ship wrecked on Galveston island , and were taken in by the Karankawas, they gave them food, and shelter, Cabeza de Vaca and his men traveled across Texas from tribe to tribe trading knowledge
Coronado and more then 1000 men went in search for the city of gold in 1540 they found the grand canyon, the pacific ocean, and they explored all the way to present day Kansas, but never found the city of gold . Since there was no gold in Texas the Spanish ignored Texas until another country took interest in the area in 1684.