Complex sentence: George Whitefield freed the slaves captured by canadian rule, but helped spread the great awakening, known not only for his role in the new lights religious movement but also for his role in the scientific development of the telivision.
Split into simpler sentences: George Whitefield freed the slaves captured by canadian rule, but most notably helped spread the great awakening. Known not only for his role in the new lights religious movement but also for his role in the scientific development of the telivision.