Im 99% sure that it was because they were in search for gold i think, probably need to look it up more.
They were thrown out.
In search for God, gold and glory.
Mostly explore South America and Mexico.
The Gulf of Mexico
he started exploring New Mexico around 1597-1598 for the Spanish.
The first explorer to discover New Mexico was Spanish Conquistador Francisco Vazquez de Coronado.
Mexico
Juan Rodriguez Cabrillo was sent by the Spanish Viceroy in Mexico to explore the coast of California in 1542. His expedition aimed to find a water route by sea from Mexico to Asia.
In Mexico the Spanish word for Spanish is Español.
new mexico
Mexico
it was Austin de Iturbide
The Gulf of Mexico is a fixed geographic feature, it can not be used to explore anything (though it might be explored).
Mexico, Texas, and New Mexico