Edison placed his filament in an oxygenless bulb, there were NO coal-fired power plants in existence.
NO COAL FIRED POWER PLANTS IN 1879!
Automobiles
In 1893, the first running, gasoline - powered American car was built and road-tested by the Duryea brothers of Springfield, Massachusetts.
ONE CAR IN 1893!
THE PRESENT
WORLD POPULATION = 7.1 BILLION!
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