While almost all languages adopted variants of Česko for the short-form name at this time, the English equivalent "Czechia"[2] /ˈtʃɛki.ə/, though attested as early as 1841,[8] is rarely used in the English-speaking world.[9]
On 14 April 2016, leading Czech politicians voted to register "Czechia" as the official English-language short-form name at the United Nations.[10]
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https://en.wikipedia.org/wiki/Name_of_the_Czech_Republic
While almost all languages adopted variants of Česko for the short-form name at this time, the English equivalent "Czechia"[2] /ˈtʃɛki.ə/, though attested as early as 1841,[8] is rarely used in the English-speaking world.[9]
On 14 April 2016, leading Czech politicians voted to register "Czechia" as the official English-language short-form name at the United Nations.[10]