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21Technological and industrial history of the United States — The technological and industrial history of the United States describes the United States emergence as one of the largest nations in the world as well as the most technologically powerful nation in the world. The availability of land and labor,… …
22Popov, Aleksandr — ▪ Russian engineer in full Aleksandr Stepanovich Popov born March 4 [March 16, New Style], 1859, Turinskiye Rudniki [now Krasnoturinsk], Perm, Russia died Dec. 31, 1905, [Jan. 13, 1906], St. Petersburg physicist and electrical engineer… …
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