Pope Clement V issues an excommunication order for the city of Venice, Italy, and all its citizens. This far-reaching order not only denies all Venetians access to Catholic sacraments, but declares them outside church law entirely. All contracts and legal agreements are rendered null and void. Venetians abroad could be legally taken prisoner and sold into slavery, a condition usually reserved for non-Christians.
The cause for this excommunication of Venice is a conflict between the city of Venice and Pope Clement V over control of Ferrara, a city in northern Italy. Citizens of Venice take the excommunication seriously and attempt to overthrow the Doge, or leader of Venice, but are unsuccessful. The excommunication order of Pope Clement V won't be lifted until 17 February, 1313.