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
Wang Bo (chancellor) tea tax, and Emperor Muzong, despite opposition from Li Jue, accepted Wang's proposal. Later in the year, Wang was made "Zhongshu Shilang" (中書侍郎), the deputy head of the legislative bureau of government (中書省), and chancellor "de facto" with the title "Tong Zhongshu Menxia Pingzhangshi" (同中書門下平章事); he also remained as the director of salt and iron monopolies. It was said that while serving as chancellor, Wang was only interested in flattering the emperor and did not speak of important matters of state. In 822, however, when there was a crisis over how Liu Wu the military governor of Zhaoyi Circuit (昭義,