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Keywords from Image Description:
Electorates of Mainz Cologne and Trier. en The ecclesiastical Electorates of Cologne in yellow Trier in green south of Cologne Mainz in pink and the Palatinate of the Rhine in green south of Mainz Not shown are the Mainz dependencies of Erfurt and the Erchfeld to the northeast fr Les lectorats ecclsiastiques de Cologne en jaune Trves