I presume the qustioner is referring to the 1919 Treaty of Versailles that set out the terms for peace with Germany at the end of the First World War. In simple terms (there were other treaties made around the same time outlining peace terms with other protagonists in the war, such as Turkey and Austria), the Treaty of Versailles was drawn up by David Lloyd-George, Prime Minister of Britain, Woodrow Wilson, President of the USA and Georges Clemenceau, Prime Minister of France (commonly known as the 'Big Three'). The treaty required Germany to: 1. formally admit to causing the war, 2. bear the massive cost for all the damage caused (known as 'reparations'), 3. hand over vast tracts of territory in Europe and her colonies abroad. Both Poland and Czechoslovakia were largely created from this lost European territory, 4. severely restrict its armed forces, 5. agree to never station an army near France's border. But perhaps the most interesting point to be made is that, for most historians, the treaty was an important cause of World War II. Hitler made the overturning of the treaty one of his central aims. Just look at his actions in the run up to war: 1. He formally rejected German blame. 2. He defaulted on reparation payments. 3. He began to build up Germany's armed forces. 4. He sent an army into the Rhineland (on France's border). 5. He invaded Czechoslovakia and Poland. Because of losing World War I and having to agree to the Treaty of Versailles, many Germans, especially right-wing conservatives, felt that their national pride had been dealt a hammer-blow and felt acute embarrassement. Hitler appeared to have all the answers to their prayers!

Do you mean the treaty of Versailles? Where both Germany and Italy got screwed? Thus birth of fascism in Europe!