"The Council of Constance was a 15th-century ecumenical council recognized by the Catholic Church, held from 1414 to 1418 in the Bishopric of Constance in present-day ...
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Germany. The council ended the Western Schism by deposing or accepting the resignation of the remaining papal claimants and by electing Pope Martin V.
The council also condemned Jan Hus as a heretic and facilitated his execution by the civil authority, and ruled on issues of national sovereignty, the rights of pagans and just war, in response to a conflict between the Grand Duchy of Lithuania, Kingdom of Poland and the Order of the Teutonic Knights. The council is also important for its relationship to ecclesial conciliarism and Papal supremacy." - (en.wikipedia.org 04.01.2022)