Further intersections in research as well as in teaching are the political history of the era of transmission (der Sattelzeit) between ca. 1780 and 1850 and the work of the Prussian ‘citizen of the world’ and scientist Alexander von Humboldt. Last but not least, the holder and the staff of the chair have the ambition to continuously discuss current theoretical-conceptual questions of historical science and to convey their meaning to ambitious students. In research as well as in daily interaction, an actor-oriented, i.e. human, approach is preferred - in the tradition of Humboldt.