What were the results of Hitler's and Mussolini's ruling?

The first answer is absolutely correct with respect to the
impacts of their rule on their respective countries.  I want to talk a bit about their
impact on the world.

Hitler, in particular, had a huge
impact in that he (more or less) started WWII.  Because of this, you can say that the
result of his rule was nothing less than the whole second half of the 20th century (and
aspects of today).

For example, without WWII, Western
Europe is not devastated and the US and USSR do not become rival superpowers in the Cold
War.  Instead, you have various powerful countries, including Germany, France, and Great
Britain.

WWII totally shaped the world we live in and that
is an important result of the rule of these two men.