You are very right that the world looked different than now regarding land and borders in the middle age. However, we have learned to discuss and are supposed to make more sensible discussions today and try to refrain from war. Ukraine, was together with 14 other countries a part of Soviet Union. Since then those countries have broken free and become their own units. Are you trying to state that Russia, Ukraine, Belarus, Moldova, Kazakhstan, Estonia, Latvia, Lithuania, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan, Armenia, Azerbaijan and Georgia are no countries? Here we are talking breakouts in modern history, but maybe that passed you understanding.