Final answer:
The outcome of the Allies invading Sicily in 1943 was the liberation of Italy from Axis control, although the Allied advance faced significant opposition and progress was slow.
Step-by-step explanation:
The outcome of the Allies invading Sicily in 1943 was the beginning of the liberation of Italy from Axis control. Although the invasion of Italy was initially successful, the Allied advance up the Italian peninsula was slow and faced significant opposition from German forces. The Italian government switched sides and joined the Allies, but German reinforcements halted the Allied advance south of Rome. Rome was finally liberated in June 1944.