How did the failures of the League of Nations contribute to WW2?

There were many things that the League was lacking which had led to its failure. Here, I will describe some reasons as to why Hitler disregarded the League, and why WW2 started.

The League did not have an army

Although Clemenceau, the leader of France, had said that the League should own it's own army, it did not. This was because Britain and other countries were selfish with their men. In the Paris Peace Conference, the leaders had come to decision that if a dispute was to happen, and a country had came to its 3rd warning, the central powers of the League were to send their own men on behalf of the league.

However, at the end of the day, Britain and France (the main leaders of the League) had their own interests and economies to worry about - they did not send their own men. For this reason, many boarder disputes, such as the dispute at Vilna - 1920, had ended unsolved. Hitler did not acknowledge the League as a proper enemy, but as weak, furthering his aggression.

The Geneva Protocol

The Geneva Protocol made the League look weak; it proved to Hitler that they were not worth recognizing as an enemy. There were two reasons to this:

1. The Geneva Protocol was drawn up by Britain and France in 1924. It was designed to back up the League's decision. When it was made, it was to enforce what the League had said. It made the League look weak; it made the League look as though it couldn't do its own job by itself.
2. Just before the Geneva Protocol was about to be signed, Britain had decided not to go through with it. They were afraid that the Protocol might end up making them do something against their interest. This made both Britain and the League look weak. Britain made themselves look unorganized, and as it was a main leader of the League, it made the League look unorganized.

The Manchurian & Abyssinian Crisis

In both crises, the aggressor had gone against the League and gotten away with it. This is what originally gave Hitler the idea of also going against the League. The crises had been the final proof that the Leage was weak.