VOM TERRITORIALEN PRINZIP DES ‚CUIUS REGIO, EIUS RELIGIO‘ DES HEILIGEN RÖMISCHEN REICHES DEUTSCHER NATION ZUM MULTIKONFESSIONELLEN STAAT IM DEUTSCHEN BUND

As a result of the Reformation initiated by Martin Luther’s theses in 1517 many European states converted to Protestantism. The Reformation superseded the catholic christianitas as a legitimate basis and state religion in the Holy Roman Empire of the German Nation as well as in other European states. This shattered the religious unity of the Old Empire. Pope Clement VII refused to call an ecumenical council for reform, asked for by Emperor Charles V to solve the religious problem of the Empire. All attempts to restore the unity of the Empire failed and led to religious wars in the Holy Roman Empire of the German Nation. The Imperial and Religious Peace of Augsburg (1555) tried to find a political and religious solution in order to overcome the constitutional crisis of the Empire. It became a law of the Holy Roman Empire that guaranteed and tolerated religious freedom, imperial status and the possessions of the Lutheran and Catholic Estates. It decreed the coexistence of the Protestant and Catholic Imperial Estates. The Calvinists were not included. It also determined the confessional affiliation of the population, i.e. the denomination of the ruler must be the denomination of the subjects (cuius regio, eius religio).The subjects had the right to emigrate (ius emigrandi). The Peace of Westphalia of 1648 confirmed this principle which remained in effect until the Principal Decree of the Imperial Deputation in 1803 and the end of the Holy Roman Empire of the German Nation. The mediatization and secularisation established new middle-sized states which were to become an important element in the history of Germany ever since the early 19th century. It was the beginning of modern German federalism. The enlarged South German states like the Grand Duchy of Baden, the Kingdoms of Bavaria and Württemberg and the Grand Duchy of Hesse became multidenominational states. Especially the southern states of Germany realigned their boundaries. As a result of the territorial changes, the Grand Duchy of Baden became four times larger than the margraviate Baden. The South German states started reforms early on. The reforms had an impact on all areas of life, from improvement of administration, military and legal reforms, schooling, universities, finances and taxation and personal rights. The integration of the new provinces into the existing old state was a challenge. All states which survived the Napoleonic period had become multidenominational states. After the Congress of Vi