Complex sentence: After collecting supplies in 1725, the governor was sick so had to stay in San Antonio and appointed Captain Melchor de Mediavilla y Azcona as lieutenant governor of Los Adaes.
Split into simpler sentences: After collecting supplies in 1725, the governor was sick. He stayed in San Antonio and appointed Captain Melchor de Mediavilla y Azcona as lieutenant governor of Los Adaes.