When did Thomas Edison first make his impact on culture and society?

Thomas Edison first made a significant impact on culture and society in the late 19th century, particularly with the invention of the incandescent light bulb in 1879. This innovation revolutionized how people illuminated their homes and public spaces, leading to extended hours of activity and fundamentally changing daily life. Additionally, his establishment of electric power generation and distribution systems laid the groundwork for the modern electrical infrastructure we rely on today. Edison's contributions not only advanced technology but also shaped social behaviors and urban development.