Concordat of Albandaea
The Concordat or Albandaea (1521) was an agreement between Titus V of the Empire of Exponent and Pope Leo X, which established the rules and regulations concerninf episcopal authority within Exponent.
Citing the French Concordat of Bologna as precedent, Titus V was able to extract similar concessions from the Pope, with the Catholic Church being able to collect all income raised in Exponent beyond that needed to sustain operation as specified by the Primate of All Exponent, while the Emperor of Exponent received the right to appoint bishops, albeit with the caveat of the possibility of a Papal veto if those candidates clash with the interests or desires of Rome.
After the fall of the Empire of Exponent in 1996 and the subsequent creation of its successor state, the Blackhelm Confederacy, in 1997, the Concordat was supplanted by the Blackhelm-Loretto Agreement.