promise of the century to come, such as the new telephone invented by Alexander Graham Bell.
1876 marked the opening of Thomas Alva Edison’s new Menlo Park, New Jersey laboratory devoted to industrial research, which created the incandescent light bulb three years later. Electricity soon replaced steam as the main source of power.
Henry Ford experimented with a gasoline-burning internal combustion engine for c automobile, American makers producing more than 4,000 by 1900. Orville and Wilbur Wright staged…
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