Original sentence: Cologne itself was a free imperial city; the electorate of Cologne included the territory surrounding the city and the County of Westphalia.This included four secular electors of Bohemia, Brandenburg, Palatine of the Rhine, and Saxony and three ecclesiastical electors: the Archbishop of Mainz, the Archbishop of Trier, and the Archbishop of Cologne
Edited sentence: This included four secular electors of Bohemia, Brandenburg, Palatine of the Rhine, and Saxony and three ecclesiastical electors: the Mainz, the Trier, and the Cologne