@Zoryanna - What you state is historically false, Ukrainian propaganda.
https://en.wikipedia.org/wiki/History_of_Crimea
https://en.wikipedia.org/wiki/Ukrainian_language

The Russian language and the Ukrainian language have the same East Slavic language precursors, so how can you tell what was spoken 1000 years ago?

At no time did Ukraine (including the old Kievian Rus even if you try to stretch history and claim that was a precursor to modern Ukraine) control Crimea, up until 1954 and the territorial gift from Khrushchev.

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