For example, many Native American languages were replaced by Dutch, English, French, Portuguese, or Spanish as a result of European colonization of the Americas.
[11] This is accomplished by periodizing English and German as Old; for Latin, an apt clarifying adjective is Classical, which also normally includes designation of high or formal register.
With increasing economic integration on national and regional scales, people find it easier to communicate and conduct business in the dominant lingua francas of world commerce: English, Mandarin Chinese, Spanish, and French.
For example, part of the "kill the Indian, save the man" policy of American Indian boarding schools and other measures was to prevent Native Americans from transmitting their native language to the next generation and to punish children who spoke the language of their culture of origin.
The revival of Hebrew has been largely successful due to extraordinarily favourable conditions, notably the creation of a nation state (modern Israel in 1948) in which it became the official language, as well as Eliezer Ben-Yehuda's extreme dedication to the revival of the language, by creating new words for the modern terms Hebrew lacked.
The Cornish language revival has proven at least partially successful: after a century of effort there are 3,500 claimed native speakers, enough for UNESCO to change its classification from "extinct" to "critically endangered".