1 янв 1890 г. - Invention of the eletric motor (1890)
Описание:
The invention of the electric motor led to the electric trolley and electric subway trains. By the 1890s, the U.S. had surpassed Britain in manufacturing output, and by the beginning of the 20th century, U.S. per capita incomes were double those of Germany and France, and 50% higher than those of Britain.Добавлено на ленту времени:
Дата:
1 янв 1890 г.
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~ 135 г назад