LOL
Ukraine has been a country for way longer than that.
It is you who need s history lesson
As the saying goes: “goodness and truth will prevail”
Western + Eastern Ukraine + Crimea was a country from 1991-2014.
Western Ukraine was part of the Polish-Lithuanian commonwealth until the final partition of Poland, then it was part of Austria until 1919, it was part of Poland again until 1939, part of the USSR until 1991.
I have a relative whose grandparents came to the US from there in 1910. The woman from Lviv listed her nationality as “Austrian”, the man from Kiev listed his nationality as “Russian”.
This “centuries of Ukraine as a state” is nonsense.