The Paris Peace Treaties officially ended WWI. The Treaty of Versailles was disliked on all sides, particularly in Germany. The League of Nations was set up to improve international cooperation and avert further wars. Its impact was limited.

The Treaty of Versailles is often referred to as the hated treaty
- this is due to the fact that the leaders of America, Britain, France and Germany were all deeply unhappy with many different areas of the final agreement.
The Germans hated everything about the treaty:
We will never stop until we win back what we deserve.
a lie. Germany officially denied the war-guilt clause in 1927.
The Weimar Government was associated with failure in World War One since it had signed the Treaty of Versailles that had ended the war. Many nationalists believed the government had sold Germany out to its enemies by ending the war too early.
The November Criminals
and the legend of the Stab in the Back
were phrases used in many of Hitler’s speeches.
Britain gained some German colonies and the German navy was destroyed but...
We shall have to fight another war again in 25 years time.
neither just nor wiseand the people who made it
stupid.
France got Alsace-Lorraine, German colonies, harsh reparations and a tiny German army but...
Woodrow Wilson got the League of Nations, and new nation-states were set up in Eastern Europe but...