We need more details what do you need help with ill help you? tell me the question in comments
I think it becomes difficult because they all wanted to have more advantages than anyone else, that became too much for the country that they defeated. The Potsdam Conference became difficult because they have problems on the things that they should do with Germany that they want to completely disarm the country.
Because if people are not allowed to be educated it strips away their freedom to learn
They are called historians lol
They discover, study, interpret and write HISTORY, so they are historians!