As a Slavic person here is my best guess how "The Ukraine" controversy started. First, as most now know Ukraine has meaning in most Slavic languages, meaning Borderland. It is in use in other countries too, in my country of origin there were several "Ukraines", aligning with our borders in time. Hence, strictly speaking concept of "an Ukraine" in English indeed exists. However, second part of the problem is that Slavic languages have no concept of English "a" and "the". I now live for 40yrs in USA and it is still hard work for me dealing with "a" and "the", brain language model formed without those concepts... Hence, my best guess about "The Ukraine" concept emergence is from the non-native English speaking Slavic people naturally not understanding that "The" is not needed in this case.
