Germany wasn't allowed to build up its army or attack other countries. Hitler did both of these things.
Hitler's nationalistic feelings towards Germany caused him to be angry with the results of the Treaty. In the Treaty of Versailles, Germany was blamed for World War I, forced to pay war debts, forced to demilitarize, and much of their original territory was distributed to the Allied Powers. Hitlers purpose was to make Germany great again, and he could only do so by violating the Treaty.
The Treaty of Versailles ending world war I was the main reason that Adolph Hitler could rally so many Germans to what ended up being world war II.
Hitler took it as a sign of weakness of the Western allies and assumed that they scared to go to war. So he kept pushing back the Versailles Treaty gaining a bigger army, navy and airforce, remilitarising the Rhineland, Anschluss, the Sudetenland and others. At every violation of Versailles France and the UK didn't try and stop him. Even after Munich when Hitler was allowed to recolonise the Sudetenland a treaty was drawn up and signed by France and the UK allowing the return to Germany of this territory. Hitler then went back on that treaty and promise and invaded Czechoslovakia.
The treaty of Versailles favored the United States, France, and Britain. It favored them so much that it was the reason the treaty did not work.
the treaty of Versailles was to much burden on Germany and there was no way they began to pay retribution that was imposed on them. it caused much hardship and hard feelings and Germany began to think the world was against them. so Germany when Hitler started ruling ignored the treaty and began to prepare for war.
Yes if the German people were not so unhappy with it's terms and effect on their daily lives, Hitler could not have risen to power so easily.
The treaty of Versailles was in 1783 so did not end WWI
"Hitler and the Nazi Party" were largely irrelevant at the time, but most Germans disliked the treaty. The most important and most contentious clause in the treaty was probably Article 231, the so-called "War Guilt Clause."
In hitlers mind he was doing a good thing, as well as germany was a poor nation after the Treaty of Versailles and hitler helped fix the nations economy. So hitler viewed what he was doing as good.
Hitler "brainwashed" the children at a young age and convinced the people that Jews started the war and made Germany lose the war. He also used the Treaty of Versailles to his advantage. The Germans hated the Treaty of Versailles because they felt it to be unfair and they thought that the United Nations were trying to diktat them or force them into bankruptcy so they could take over Germany.
Though the Germans started World War I they were treated harshly by the Treaty of Versailles when they lost, so they hated it and it was likely did a primary force in raising Adolph Hitler to power.
Basically, German troops set foot in that region and started remilitarizing the Rhineland military, which violated the terms of the Treaty of Versailles. Of course, no countries took action since they thought that was the end of any German hostility. Hitler, of course, was at no state to make war with France yet.