Because there was no more gold
Spain
Spain
Spain
Spain
They lost interest in texas because the natives had depleted the spain people and spain did not want to risk anymore people so they left........
Spain did not give Texas to the US, the US took Texas from Spain in a war.
Coronado's was suppose to be looking for gold but he came up empty handed, but he did find native American nomads. Nomads follow there food source so that explains "wander with the cows".
Spain is smaller than Texas by about a third. Spain 195,364 Sq. Miles Texas 261,797 Sq. Miles
No, Spain had no relevance to Texas after 1821.
Spain started to build missions in Texas around 1690.
Texas is bigger.