The best statement that evaluates South Carolina’s role in the American Revolution is: The British failed to control the South Carolinian backcountry but did control the city of Charleston.
This statement accurately reflects the complexities of the conflict in South Carolina, where significant battles took place in the backcountry despite the British control of Charleston. South Carolina was a crucial battleground, and the resistance in the backcountry played a significant role in the overall efforts against British forces.