Why was Central Eastern Europe created after World War One?

One of the reasons for recreating Central Eastern Europe after World War One was the policy of self-determination, which was put forward and fiercely supported by an American president, Woodrow Wilson, who also had very democratic ideas. He, as well as the other peacemakers argued that people who thought of themselves as a nation should form a single state. For example, Poles should live in a country called Poland, which should be governed by Poles; …

…in the aims that the peacemakers wanted to achieve. So as far as we can see, the Paris Peace Settlement was a complete failure, in a way it actually made matters even worse than before. Yes, there was at least an extremely small sight of success, however nevertheless all the treaties signed and all the aims that were planned to be achieved were a failure, and could actually start a new war in the future.