Hitler and mussolini headed two of the axis powers of world war 2 true or false

The statement is - True.

Hitler and Mussolini were leading two of the axis powers during World War II. Hitler was the head of Germany, while Mussolini was the head of Italy. Both of these two countries were led by Nazi leaders backed up by Nazi party, and they managed to create the biggest war the mankind has ever witnessed, especially Germany, which was the leader and most powerful of the axis powers.

i would go with the last one

it increase by 12% a year from 1812-1820