Chancellor of Germany was usually held by Archbishops of Mainz. The title was, at times, used in several states of German-speaking Europe. The modern office of chancellor was established with the North German Confederation, of which Otto von Bismarck became "Bundeskanzler" (meaning "Federal Chancellor") in 1867. With the enlargement of this federal state to the German Empire in 1871, the title was renamed to "Reichskanzler" (meaning "Chancellor of the Realm"). With Germany's constitution of 1949, the title of "Bundeskanzler" was revived. During the various eras, the role of the chancellor has varied. From 1867 to 1918, the chancellor was the only responsible minister
Chancellor (education) also use the title "president", and the first vice-chancellor, Alan Gilbert (2004–10), used "president" as his main title. The University of Warwick now officially uses "vice-chancellor and president" (VCP), although the holder is usually still known as the vice-chancellor in all but official documents. The chief executives of the constituent colleges of the University of London, many of which are now functionally independent universities, generally use the title "principal", although the chief executive of Imperial College has the title "rector", and Birkbeck College is headed by the master. The executive head of an Australian university is the vice-chancellor, who serves