Pacta conventa (Poland)
Pacta conventa (Latin for "articles of agreement") was a contractual agreement entered into between the "Polish nation" (i.e., the szlachta (nobility) of the Polish–Lithuanian Commonwealth) and a newly elected king upon his "free election" (wolna elekcja) to the throne from 1573 to 1764. It declared policies the King would enact once on the throne.