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) Chang'an to serve as chancellor, while sending Wang to Huainan in Pei's stead. Wang also remained the director of salt and iron monopolies. It was said that when Wang arrived at Huainan, there was a famine caused by a severe drought, but Wang did not reduce tax burdens and continued to collect heavily from the people, leading to much popular resentment. After Emperor Muzong died in 824 and was succeeded by his son Emperor Jingzong, Wang Bo was relieved of his duties as director of salt and iron monopolies, but remained as the military governor of Huainan. He was also