  The '''Council of Constance''' is the 15th ecumenical council recognized by the Roman Catholic Church, held from 1414 to 1418. The council ended the Three-Popes Controversy, by deposing or accepting the resignation of the remaining Papal claimants and electing Pope Martin V.  The Council also condemned and executed Jan Hus and  ruled on issues of national sovereignty, the rights of pagans, and just war in response to a conflict between the Kingdom of Poland and the Order of the Teutonic Knights. The Council is important for its relationship to ecclesial Counciliarism and Papal supremacy.  ==Origin and background==  at the council of Constance]] The council was called by the German King Sigismund (later Holy Roman Emperor), a supporter of John XXIII, the pope recently elected at Pisa (and later declared an Antipope). The council was held from 16 November 1414 to 22 April 1418, in Constance (currently known as Konstanz).  Its main purpose was to end the Papal schism which had resulted from the confusion following both the Avignon Papacy and the Council of Pisa (which had sought to resolve the situation). The Council of Constance marked the high point of the Conciliar movement to reform the Church. According to Joseph McCabe, the council was attended by roughly 29 cardinals, 100 &quot;learned doctors of law and divinity,&quot; 134 abbots, and 183 bishops and archbishops.  At the time the council was called, there were three claimants to the Papacy (Benedict XIII, Gregory XII and John XXIII).  A few years earlier, in one of the first blows to the Conciliar movement, the bishops at the Council of Pisa had deposed the two claimant popes and elected a third pope, claiming that in such a situation, a council of bishops had greater authority than just one bishop, even if he were the bishop of Rome.  An innovation at the Council was that instead of voting as individuals, the bishops voted in national blocs, explicitly confirming the national pressures that had fueled the schism since 1378.  ==Decrees and doctrinal status==  The famous decree ''Haec Sancta Synodus,'' which gave primacy to the authority of the Council and thus became a source for ecclesial conciliarism, was promulgated in the fifth session, 6 April 1415.     marks the high water mark of the Conciliar movement of reform..  This decree, however, is not considered valid by the Magisterium of the Catholic Church, since it was never approved by Pope Gregory XII or his successors, and was passed by the Council in a session before his confirmation.  The Church declared the first sessions of the Council of Constance an invalid and illicit assembly of Bishops, gathered under the authority of Emperor Sigismund and Antipope John XXIII.  The acts of the Council were not made public until 1442, at the behest of the Council of Basel; they were printed in 1500. The creation of a book on how to die was ordered by the council, and thus written in 1415 called ''Ars moriendi''.  ==Ending the Western Schism== , a statue commemorating the Council]]  With the support of Sigismund, Holy Roman Emperor, enthroned before the high altar of the cathedral of Constance, the Council of Constance recommended that all three popes abdicate, and that another be chosen. In part because of the constant presence of the emperor, other rulers demanded that they have a say in who would be pope.  Gregory XII then sent representatives to Constance, whom he granted full powers to summon, open and preside over an Ecumenical Council; he also empowered them to present his resignation to the Papacy. This would pave the way for the end of the Western Schism.  The legates were received by Emperor Sigismund and by the assembled Bishops, and the Emperor yielded the presidency of the proceedings to the papal legates, Cardinal Dominici of Ragusa and Prince Charles of Malatesta. On 4 July 1415 the Bull of Gregory XII which appointed Malatesta and Cardinal Dominici of Ragusa as his proxies at the council was formally read before the assembled Bishops. The cardinal then read a decree of Gregory XII which convoked the council and authorized its succeeding acts. Thereupon, the Bishops voted to accept the summons. Prince Malatesta immediately informed the Council that he was empowered by a commission from Pope Gregory XII to resign the Papal Throne on the Pontiff's behalf. He asked the Council whether they would prefer to receive the abdication at that point or at a later date. The Bishops voted to receive the Papal abdication immediately. Thereupon the commission by Gregory XII authorizing his proxy to resign the Papacy on his behalf was read and Malatesta, acting in the name of Gregory XII, pronounced the resignation of the papacy by Gregory XII and handed a written copy of the resignation to the assembly.  Former Pope Gregory XII was then created titular Cardinal Bishop of Porto and Santa Ruffina by the Council, with rank immediately below the Pope (which made him the highest ranking person in the Church, since, due to his abdication, the See of Peter was vacant). Gregory XII's cardinals were accepted as true cardinals by the Council, but the members of the council delayed electing a new pope for fear that a new pope would restrict further discussion of pressing issues in the Church.  By the time the anti-popes were all deposed and the new Pope, Martin V, was elected, two years had passed since Gregory XII's abdication, and Gregory was already dead.  The council took great care to protect the legitimacy of the succession, ratified all his acts and a new pontiff was chosen. The new pope, Martin V, elected November 1417, soon asserted the absolute authority of the papal office.  ==Condemnation of Jan Hus==  in Council of Constance by Václav Brožík]] A second goal of the council was to continue the reforms begun at the Council of Pisa.  These reforms were largely directed against John Wycliff, mentioned in the opening session, and condemned in the eighth, 4 May 1415 and Jan Hus, and their followers. Jan Hus, summoned to Constance under a letter of indemnity, was condemned by council and burned at the stake notwithstanding on 6 July 1415.  ==Polish–Lithuanian–Teutonic conflict== In 1411, the First Peace of Thorn ended the Polish–Lithuanian–Teutonic War, in which the Teutonic Knights fought the Kingdom of Poland and Grand Duchy of Lithuania. However, the peace was not stable and further conflicts arose regarding demarcation of the Samogitian borders. The tensions erupted into the brief Hunger War in summer 1414. It was concluded that the disputes would be mediated by the Council of Constance. The propaganda war soon grew from a border quarrel to a fundamental dispute of the Teutonic mission – did the Knights have the right to wage the crusade? was it a Just War?  The Polish position was defended by Paulus Vladimiri, rector of the Jagiellonian University, who challenged legality of the Teutonic crusade. He argued that a forced conversion was incompatible with free will, which was an essential component of a genuine conversion. Therefore the Knights could only wage a defensive war if pagans violated natural rights of the Christians. Vladimiri further stipulated that infidels had right which had to be respected and neither the Pope or the Holy Roman Emperor had the authority to violate them. Poles and Lithuanians also brought a group of Samogitian representatives to testify of atrocities committed by the Knights. However, Vladimiri's ideas proved too radical and were rejected by Catholic theologians.  John of Falkenberg proved to be the fiercest opponent of the Poles. In his ''Liber de doctrina'', Falkenberg argued that &quot;the Emperor has the right to slay even peaceful infidels simply because they are pagans (...). The Poles deserve death for defending infidels, and should be exterminated even more than the infidels; they should be deprived of their sovereignty and reduced to slavery.&quot; In ''Satira'', he attacked Polish King Jogaila, calling him a &quot;mad dog&quot; unworthy to be king. Falkenberg was condemned and imprisoned for such libel, but was not officially accused of heresy. Other opponents included Grand Master's proctor Peter Wormditt, Dominic of San Gimignano, John Urbach,  Ardecino de Porta of Novara, and Bishop of Ciudad Rodrigo Andrew Escobar. They argued that the Knights were perfectly justified in their crusade as it was a sacred duty of Christians to spread the true faith. Cardinal Pierre d'Ailly published an independent opinion that attempted to somewhat balance both Polish and Teutonic positions.  The Council did not make any political decisions. It established  Diocese of Samogitia, with seat in Medininkai and subordinated to Lithuanian dioceses, and appointed Matthias of Trakai as the first bishop. Pope Martin V appointed Polish King Jogaila and Lithuanian Grand Duke Vytautas as vicar generals in Pskov and Veliky Novgorod in recognition of their Catholicism. After another round of futile negotiations, Gollub War broke out in 1422. It ended with the Treaty of Melno that resolved the territorial disputes for good.  