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By the 1920s, the U.S. was the world's leading industrial power while only being born out of colonial rule 144 years prior.
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first inexpensive way to mass produce steel by putting oxygen into iron. It was discovered by Henry Bessemer.
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The U.S. railroads extend west of the Missouri River.
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The typewriter was invented by Christopher Sholes.
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The first transcontinental railroad is completed, spanning the whole nation.
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C.F. Dowd proposed the division of Earth into 24 time zones, it was eventually adopted by the U.S. in 1883 and the whole world the following year.
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Inventor Thomas Alva Edison established the first research laboratory in Menlo Park, NJ.
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The telephone was introduced by Alexander Graham Bell and Thomas Watson, the two most likely unaware of its future and evolution into the smartphones we have today.
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Thomas A. Edison patented the incandescent light bulb and it only took a decade for it to change business and to run multiple machines.
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Built in St. Augustine by Henry M. Flagler
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Built by railroad tycoon Henry B. Plant, it was considered the premier hotel out of the eight built.
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Also done by Flagler, he extended the Florida East Coast Railway from Key West, up along the east coast.
