In 1938, mussolini banned all american cartoons in italy, except for which one

The correct answer is - Mickey Mouse.

Mickey Mouse, in Italy known as Topolino (meaning little mouse), was the only cartoon not banned in Italy by Mussolini in 1938. This is was due because all of his family members loved the cartoon very much, so he left it to be published freely. This was until 1942 when he was not able to justify anymore the publishing of a cartoon from a country that Italy is in war with, so it was banned, but the tradition continued with an Italian version of Mickey Mouse, called Tuffolino.