What would an observer examining the development of self-determination in Eastern Europe between the World Wars conclude?

that it encouraged socialism
that it promoted national unity
that it promoted peace between nations
that practical concerns made it difficult to implement

An observer examining the development of self-determination in Eastern Europe between the World Wars would likely conclude that practical concerns made it difficult to implement. The period between the two World Wars was marked by political upheaval, economic instability, and the rise of authoritarian regimes. Many Eastern European countries struggled to assert their independence and establish stable, democratic governments in the face of these challenges. National unity and promoting peace between nations were also important factors, but the practical difficulties of implementing self-determination in such a volatile and uncertain environment would likely be a major focus of analysis.