Complex sentence: Many of the "peninsulares" from the newly-independent colonies fled to Puerto Rico which was granted the status of a Spanish Province with representation in the Spanish Cortes following the promulgation of the Cádiz Constitution of 1812.
Split into simpler sentences: Many of the "peninsulares" from the newly independent colonies fled to Puerto Rico. It was granted the status of a Spanish Province with representation in the Spanish Cortes following the promulgation of the Cádiz Constitution of 1812.