Demographics of Crimea point of time. Turkey has provided the greatest support to Ukraine, which has been unable to resolve the problem of education in the mother tongue in Crimea, by bringing the schools to a modern state. Ukrainian was until 2014 the single official state language countrywide, but in Crimea government business was carried out mainly in Russian. Attempts to expand the usage of Ukrainian in education and government affairs have been less successful in Crimea than in other areas of the nation. Currently two thirds of migrants into Crimea are from other regions of Ukraine; every fifth migrant is from elsewhere
Crimea by "the commonality of the economy, the proximity, and close economic and cultural relations between the Crimean region and the Ukrainian SSR". At that time no vote or referendum took place, and Crimean population had no say in the transfer (also typical of other Soviet border changes). After the annexation of Crimea by the Russian Federation, doubts have been expressed - from the Russian side by all means, but even by Western historians (Richard Sakwa, "Frontline Ukraine. Crisis In the Borderlands", 2015) - about the very legitimacy of the 1954 transition of Crimea to Ukraine; in the critics' view the