How did expansionism pave the way for world war 2?

It has been studied that World War II as a continuation of the first, that is because the causes the ignite the conflict follow the condition imposed to Germany after their defeat in the big war.

By the end of World War I, The victorious parties gave hard politic and economic sanctions to Germany and the Otoman Empire, that had a negative impact in those countries projects.

The European Nations seemed to have misunderstand that the overflow of their pretentions of occupation and colonialism was the cause of World War I ; that was why one of the punishments of the defeated nations was the lost of territory.

That attitude and the support of the Society on Nations, as the warden, provoke Germany´s revenge, and had and enormous receptions in several other nations that saw themselves cut out of the distribution, as was the case of Italy.