In Captain Planet, what country is Linka from?

Captain Planet was a cartoon in the nineties about five youths who had rings that harnessed the powers of the elements, and who used them to combat pollution. In short.
One of the kids was a girl named Linka who had a Russian accent, but in the first episode, when asked where she was from, she said the Soviet Union. In 1991 when the USSR fell, the opening bit about her was changed from “from the Soviet Union, Linka…” to “from Eastern Europe, Linka…”, therefore indicating that she’s from one of the countries that formed the USSR, and not Russia, as is usually thought.
I have not seen all the episodes, there are quite a few, but I can’t remember any where her country is mentioned. Is it ever specified, either in the show, or anywhere else?