Complex sentence: The growth of Marcellus Township and the Village of Marcellus can be attributed to the Peninsular Railroad in the winter of 1870-1871, which created a economic boom for the area at the time.
Split into simpler sentences: The growth of Marcellus Township and the Village of Marcellus can be attributed to the Peninsular Railroad in the winter of 1870-1871. Which created a economic boom for the area at the time.