In what way has the spread of coal-powered factories been characteristic of the modern era?

The spread of coal-powered factories has been a hallmark of the modern era as it facilitated the Industrial Revolution, driving mass production and economic growth. These factories harnessed coal as a primary energy source, leading to increased efficiency and output in manufacturing processes. This shift not only transformed labor dynamics and urbanization but also significantly impacted environmental conditions, marking a departure from agrarian economies to industrialized societies. Consequently, coal-powered factories symbolized technological advancement while also highlighting challenges related to sustainability and environmental degradation.