In 1832, Cyrus McCormick's mechanical reaper revolutionized agriculture by increasing grain harvesting efficiency, enabling larger cultivation with less labor. However, this innovation displaced many manual laborers, causing social and economic upheaval. As reapers spread, farmworkers migrated to cities, seeking jobs and contributing to urban growth but also facing overcrowding. This marked a significant shift in the labor market, altering rural and urban dynamics during the industrial revolution.