Acommon trait in the rise to power of hitler and mussolini was that they both
a. ended unemployment
b. universally eliminated all other political parties
c. supported freedom of the press
d. encouraged labor unions.

The correct answer is option b. "universally eliminated all other political parties". Hitler and Mussolini were rulers of Germany and Italy, respectively and have many common traits that characterized their leadership. One of these characteristics was the elimination of all the other political parties. Hitler with the "National Socialist German Workers' Party" or Nazi Party, and Mussolini with the National Fascist Party, established their party as the only one in their countries.

b. sec, foreign relations