I am not going into thin matters of how funny (and tragic at the same time) it sounds for me as an ex-Soviet citizen. I just wuold like to draw your attention to one of the tweets with which Ukrainian president Petro Poroshenko celebrated the day.
Ukraine existed, exists, and will exist. And Novorossiya is a Tolkien's myth called Mordor.He wrote it in Ukrainian, but our languages are so close that there's absolutely no trouble for me to translate it.
The matter is that the word Novorossiya (literally, New Russia) officially appeared in 1764, when Russian empress Catherine the Great established the Novorossiya governorate on the lands conquered during Russo-Turks wars.