Light Bulb

Menlo Park, NJ

1879_LightbulbInventor Thomas Edison patents and commercializes the light bulb. Edison continued to make improvements on lighting, eventually developing the first commercial power plant, Pearl Street Station, in Lower Manhattan in 1882.

World Population : 170,060,000

Key:   1,000,000 People    1,000,000 People (Annotated)    Milestone

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