Firstly I want to mention the following statements with which the majority of educated people agrees:
1. "Historical truth is consider what is written in the majority of school/university learning academic books in the majority of schools/universities on the planet in the majority of countries".
2. "The Historical Truth can change only be revealing new findings regarding it"
3. "The existence of Historical Truth is important in order to avoid chaos. Otherwise no international law or institution would be able to function properly (e.g. United Nations, International Courts) "
4. "Each person has the right to believe anything he/she wants but personal opinion could never be a scientific finding".
Example 1st:
If in the majority of countries in the majority of historical academic books is written that Mustafa Kemal Atatürk was an excellent charismatic Turkish leader that reformed Turkey, this is the Historical Truth even if Greeks and Armenians disagree due the massive massacres of their populations under his commands that took place in the period 1915 - 1925. Correct?
Example 2nd:
If the majority of academics globally (in the majority of schools/ universities, in the majority of countries) agrees that Stalin was a ruthless bloodthirsty dictator, this is the Historical Truth even if all Russians disagree. Correct?
Example 3rd:
Henry Kissinger was considered one of the most talented and capable Foreign Ministers of USA. For this reason he was also awarded the Nobel Peace Prize. During the 80s when the role of CIA in South America under the guidelines of Kissinger was revealed by journalists and academics this Historical Truth changed. The new Historical Truth says that he was a ruthless politician linked with many International Crimes against Humanity even if Americans disagree.
Correct?
Saying these I have the following questions (please don't use inaccuracies regarding the dates because Wikipedia will reveal to me the Historical Truth):
1. When historically Slavs came to settle to the Balkans? From where they came?
2. If Ukrainians exist as a different nation when they came to settle in the area which is today Ukraine.