Answer:
Marqués de Rubí recommended that the capital of the Spanish province of Texas be moved from Los Adaes to San Antonio because military and economic situations at Los Adaes had deteriorated. The only way to hinder more loss of economic, military, and manpower resources especially given the constant threats and raids posed by the Apache Natives was to abandon the Los Adaes settlement. Therefore, he declared Los Adaes indefensible.
Explanation:
Marqués de Rubí, a field marshal of the Spanish army was given the singular assignment of inspecting the New Spain's northern presidio system. He arrived Veracruz on November 1, 1764. After travelling about 7,600 miles, he rearranged the presidios and reduced the number to 15 for effective administration and military coverage. His recommendations played a big role in redefining the relationship and boundary of East Texas and Mexico.