The Treaty was enacted in 1230 A.D. - in essence, it ended the “feud” between Holy Roman Emperor Frederick II and Pope Gregory IX. The Pope had excommunicated The Emperor for his “perceived” encroachments into Papal Territories and his refusal to acknowledge Papal Authority (over him!). The Treaty stipulated that Frederick had to recognize Papal States and allow the free “election” and placement of Clergy (especially in Sicily). In return, - simply – Frederick's excommunication would be lifted. As a result of the Treaty, The Pope allowed Frederick to have a greater authority to expand his Empire.