concordat

noun

1. A formal agreement between two parties, especially between a church and a state; specifically, an agreement between the Pope and a government.

   “That eminent and independant statesman, Count Louis of Medicis, concluded a concordat with cardinal Gonsalvi, at Terracina, on the 16th February, 1816, probably the most humiliating instrument to which the Roman court has been forced to submit since the fall of the Bonapartes.”

   “The Concordat of the See of Rome with King Diniz is the most interesting ecclesiastical epoch […].”

   “Later, he also promoted a significant degree of reconciliation between the Austrian social democratic movement and the Roman Catholic Church through the negotiation of the 1960 Concordat.”

   “1527: when the cardinal comes back from France, he immediately begins ordering up banquets. French ambassadors are expected, to set the seal on his concordat.”