🔗 Hebrew: the only language to revive from absolute 0 native speakers to Millions
The revival of the Hebrew language took place in Europe and Palestine toward the end of the 19th century and into the 20th century, through which the language's usage changed from the sacred language of Judaism to a spoken and written language used for daily life in Israel. The process began as a diversity of Jews started arriving and establishing themselves alongside the pre-existing Jewish community in the region of Palestine in the first half of the nineteenth century, when veteran Jews in Palestine (largely Arabic-speaking by that time) and the linguistically diverse newly arrived Jews all switched to use Hebrew as a lingua franca, the historical linguistic common denominator of all the Jewish groups. At the same time, a parallel development in Europe changed Hebrew from primarily a sacred liturgical language into a literary language which played a key role in the development of nationalist educational programs. Modern Hebrew was one of three official languages of Mandatory Palestine, and after the Israeli Declaration of Independence in 1948, one of two official languages of Israel, along with Modern Arabic. In July 2018, a new law made Hebrew the sole official language of the state of Israel, with Arabic having "special status". More than purely a linguistic process, the revival of Hebrew was utilized by Jewish modernization and political movements, and became a tenet of the ideology associated with settlement of the land, Zionism and Israeli policy.
The process of Hebrew's return to regular usage is unique; there are no other examples of a natural language without any native speakers subsequently acquiring several million native speakers, and no other examples of a sacred language becoming a national language with millions of "first language" speakers.
The language's revival eventually brought linguistic additions with it. While the initial leaders of the process insisted they were only continuing "from the place where Hebrew's vitality was ended", what was created represented a broader basis of language acceptance; it includes characteristics derived from all periods of Hebrew language, as well as from the non-Hebrew languages used by the long-established European, North African, and Middle Eastern Jewish communities, with Yiddish (the European variant) being predominant.