Complex sentence: After the fall of Mobile in March 1780, between 1,500-2,000 Indians had come at various points to Pensacola for its defense, including Choctaws, and Creeks, with Creeks being the most numerous.
Split into simpler sentences: After the fall of Mobile in March 1780, between 1,500-2,000 Indians had come at various points to Pensacola to join in its defense. These included Choctaws and Creeks, with Creeks being the most numerous.