Ukrainian language - Wikipedia
https://en.wikipedia.org/wiki/Ukrainian_languageUkrainian , historically also Ruthenian, is an East Slavic language of the Indo-European language family, and is one of Slavic languages, which are part of a larger Balto-Slavic branch. It is the native language of Ukrainians and the official state language of Ukraine. Written Ukrainian uses a variant of the Cyrillic script (see Ukrainian alphabet).
Russian language in Ukraine - Wikipedia
https://en.wikipedia.org/wiki/Russian_language_in_UkraineThe Russian language in Ukraine is recognized as the language of a national minority but not as a state language. It is explicitly mentioned in the Constitution of Ukraineadopted by the parliament in 1996. Article 10 of the Constitution reads: "In Ukraine, the free development, use and protection of Russian, and other languages of national minorities of Ukraine, is guaranteed". The Constitu…
Russian language - Wikipedia
https://en.wikipedia.org/wiki/Russian_languageClassification. Russian is an East Slavic language of the wider Indo-European family.It is a descendant of the language used in Kievan Rus', a loose conglomerate of East Slavic tribes from the late 9th to the mid 13th centuries. From the point of view of spoken language, its closest relatives are Ukrainian, Belarusian, and Rusyn, the other three languages in the East Slavic …