Answer:
They sieged the city of Zara, which is a catholic city.
Explanation:
- An attack on one city or any kind of attack or threat towards anything catholic is considered an attack on the religion itself.
- TIP: google the question and even if it is wikipedia, go onto one of the websites and press (ctrl + f) and type any key words (I used excommunicate) and it will help find those hard questions
- TIP: Can't find good sites? go to wikipedia and go to their cite page, they have good sources
