The rise of industry came accompanied with the rise of new, most lucrative jobs. During the late 1880's into the early 1900's, nearly forty percent of all rural townships lost the majority of their populations after people started migrating to big cities such as New York.
This migration was caused by the emergence of new factories and businesses to specific regions. This in turn created an incredible demand for factory line labor. As more and more people moved to these new production hubs, more businesses followed, and so did the need for more workers, only adding to the demand and migration of people looking for jobs and/or higher wages.