Final answer:
Rene-Robert Cavelier de La Salle's failed French colony in Texas ultimately resulted in the Spanish dominating and maintaining control over Florida, while also facing hostilities from other European powers.
Step-by-step explanation:
Rene-Robert Cavelier de La Salle's failed French colony in Texas affected the Spanish in several ways. Firstly, it led to the Spanish taking action to defend their territory by establishing their own colony in San Agustín (St. Augustine) to counter the French presence. This conflict between the French and Spanish in the region ultimately resulted in the Spanish dominating and maintaining control over Florida.
The Spanish also faced hostilities from other European powers, such as the British, who conducted raids on Spanish Florida during Queen Anne's War. These raids further weakened Spain's hold on the region and strengthened British alliances with indigenous tribes, paving the way for the founding of the Georgia colony.
Overall, the French colony's failure in Texas heightened tensions and sparked conflicts between European powers in the Americas, ultimately solidifying Spanish political control and influence in the region.