How did the rise in dictatorships in italy, germany, and japan and the aggression of those nations toward other countries lead to ww||?

Some of the problems that let to the rise of dictators in Germany, Italy, and Japan was that they were all aggravated. Germany and Italy were mad at what their role in the Treaty of Versaills. Hitler knew this so he promised a better future and everyone rallied behind him. This is what happened with all three countries. These people promised a better future so they rallied behind them and the leaders became dictators.