Complex sentence: This fueled enough growth and investment that in 1886 the marble companies saw to it that the center of town was incorporated as Rutland village, and most of the town was split off as West Rutland and Proctor, which contained the bulk of the marble quarries.
Split into simpler sentences: This fueled enough growth and investment that in 1886 the center of town incorporated as Rutland village. Most of the town was split off as West Rutland and Proctor, which contained the bulk of the marble quarries.