9 фев 1891 г. - Frontier line officially gone (1890)
Описание:
(1890) superintendent of census declared that for 1st time frontier line is gone; All unsettled areas settled; “Closing” of frontier → influential essay - Frederick Turner’s “The Significance of the Frontier in American History” (1893)Добавлено на ленту времени:
Дата:
9 фев 1891 г.
Сейчас
~ 134 г назад