What three primary areas constituted Edison's first major cultural and societal footprint?

Answer

How we invent, how we entertain, and how we structure our days and cities.

Edison's initial transformative impact is summarized as the tripartite transformation involving the industrial lab (how we invent), the phonograph (how we entertain), and the electrical system (how we structure our days and cities).

What three primary areas constituted Edison's first major cultural and societal footprint?
inventionHistoryinventorcultureSociety