Italy only has one main religion, this being Roman Catholicism.
Shintoism, Buddhism,and Confucianism are the three main religions in Japan.
Catholicism
   
christianity (catholics ), judaism and islam
Absolutely. Being the home of The Pope and the Vatican, you'd expect it. The major religions in Italy are Christianity (Catholicism), which over 80% of the population follow.
If you mean Taoism, then one of the other religions is Budhaism.
Judaism, Christianity and Islam
Islam, Buddhism, Catholicism.
jewish, christian, and islamic
Judaism, Christianity, & Islam.
They have three main religions Christianity, Islam, and African religion.
Florence, Venice, and Milan were the three main city-states of Italy.