How was the idea of self demonstration affected by the peace treaties?

The idea of self-determination was significantly influenced by the peace treaties following World War I, particularly the Treaty of Versailles. These treaties aimed to redraw national boundaries and establish new nation-states based on ethnic and national identities, reflecting the principle of self-determination championed by leaders like Woodrow Wilson. However, the implementation often fell short, leading to unresolved ethnic tensions and conflicts in newly formed states, as many groups found their aspirations undermined or ignored. Consequently, while the treaties promoted the concept, they also revealed the complexities and challenges of applying self-determination in practice.