What is Invented Tradition?

Legal Definition
The invention of tradition is a concept made prominent in the eponymous 1983 book edited by British Marxist intellectual E. J. Hobsbawm and T. O. Ranger. In their Introduction the editors argue that many "traditions" which "appear or claim to be old are often quite recent in origin and sometimes invented." They distinguish the "invention" of traditions in this sense from "starting" or "initiating" a tradition which does not then claim to be old. The phenomenon is particularly clear in the modern development of the nation and of nationalism, creating a national identity promoting national unity, and legitimising certain institutions or cultural practices.
-- Wikipedia