Complex sentence: The Ochese Creek joined the rebellion, burning the Ocmulgee trading post, and South Carolina began arming the Cherokee, whose attacks forced the Ochese Creeks to abandon the Ocmulgee and Oconee and move west to the Chattahoochee, while the Yamasee took refuge in Spanish Florida.
Split into simpler sentences: The Ochese Creek joined the rebellion, burning the Ocmulgee trading post, and South Carolina began arming the Cherokee. Cherokee attacks forced the Ochese Creeks to abandon the Ocmulgee and Oconee and move west to the Chattahoochee, while the Yamasee took refuge in Spanish Florida.