Archbishopric of Cologne
Overview
 
The Electorate of Cologne ( or ) was an ecclesiastical principality of the Holy Roman Empire
Holy Roman Empire
The Holy Roman Empire was a realm that existed from 962 to 1806 in Central Europe.It was ruled by the Holy Roman Emperor. Its character changed during the Middle Ages and the Early Modern period, when the power of the emperor gradually weakened in favour of the princes...

 and existed from the 10th to the early 19th century. It consisted of the temporal possessions of the Roman Catholic Archdiocese of Cologne
Roman Catholic Archdiocese of Cologne
The Archdiocese of Cologne is an archdiocese of the Catholic Church in western North Rhine-Westphalia and northern Rhineland-Palatinate in Germany.-History:...

  . It was ruled by the Archbishop in his function as prince-elector
Prince-elector
The Prince-electors of the Holy Roman Empire were the members of the electoral college of the Holy Roman Empire, having the function of electing the Roman king or, from the middle of the 16th century onwards, directly the Holy Roman Emperor.The heir-apparent to a prince-elector was known as an...

 of the empire. The capitals of the electorate were Cologne
Cologne
Cologne is Germany's fourth-largest city , and is the largest city both in the Germany Federal State of North Rhine-Westphalia and within the Rhine-Ruhr Metropolitan Area, one of the major European metropolitan areas with more than ten million inhabitants.Cologne is located on both sides of the...

 (until 1288) and then Bonn
Bonn
Bonn is the 19th largest city in Germany. Located in the Cologne/Bonn Region, about 25 kilometres south of Cologne on the river Rhine in the State of North Rhine-Westphalia, it was the capital of West Germany from 1949 to 1990 and the official seat of government of united Germany from 1990 to 1999....

. It was secularised in 1803 during the German Mediatisation
German Mediatisation
The German Mediatisation was the series of mediatisations and secularisations that occurred in Germany between 1795 and 1814, during the latter part of the era of the French Revolution and then the Napoleonic Era....

.
Cologne
Cologne
Cologne is Germany's fourth-largest city , and is the largest city both in the Germany Federal State of North Rhine-Westphalia and within the Rhine-Ruhr Metropolitan Area, one of the major European metropolitan areas with more than ten million inhabitants.Cologne is located on both sides of the...

 is the ancient Roman city of Colonia Agrippina and has been a bishop's see since Roman times.
 
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