I'm from Balkan... this is reason why I know so much about this stuff. Even here such stuff are suppressed. Uncle of one my friend was famous archeologist which for years study these locations, but communist regime silence him and put his research under the rug. So on one side you have researches with valid data and on other side our Academia which mostly want Status Quo. Many stuff are verified by world scientists, but again stream of 'conventions' is so strong. So even in my country science community don't want to talk about it. Weird thing, right? I will try to find some video in English. It's hard to me to talk in details about it. So you can hear more about language, religion and other connections between Europe and east. However, common people like us, can't know for sure. We don't have knowledge, equipment, etc. so we only can believe in some stuff, without possibility to proving it on our own.