Why didn't world war 1 make the world safe for democracy?

World War I did not make the world safe for democracy primarily because it led to political instability and the rise of authoritarian regimes in several countries. The harsh conditions of the Treaty of Versailles fostered resentment in Germany, paving the way for the rise of Adolf Hitler and the Nazi Party. Additionally, the war's aftermath saw the collapse of empires and the emergence of new states, many of which struggled with governance and civil unrest, undermining democratic principles. Overall, instead of promoting democracy, the war created conditions that allowed totalitarian ideologies to flourish.