What were some of the problems that led to the rise of dictators in germany ,italy ,and japan?

The answer is actually quite simple. After WWI, many countries that suffered loss and consequences afterwards were eager for revenge (Especially Germany). All that was needed was some random guy that can create good speeches and had both financial and military power (Such as Hitler) to show and the people easily accepted him. This happened to the majority of countries that were affected by the treaty of Versailles. (It's pronounced Ver-s-i)