The Borussian myth or Borussian legend is the name given by early 20th-century historians of German history to the earlier idea that German unification was inevitable, and that it was Prussia's destiny to accomplish it. The Borussian myth is an example of a teleological argument. Borussia is the Latin name for Prussia.
A teleological argument holds all things to be designed for, or directed toward, a specific final result. That specific result gives events and actions, even retrospectively, an inherent purpose. When applied to the historical process, an historical teleological argument posits the result as the inevitable trajectory of a specific set of events. These events lead "inevitably," as Karl Marx or Friedrich Engels proposed, to a specific set of conditions or situations; the resolution of those lead to another, and so on. This goal-oriented, 'teleological' notion of the historical process as a whole is present in a variety of arguments ab