The principal functions of negationist history are the abilities to control ideological influence and to control political influence. In "History Men Battle over Britain's Future", Michael d’Ancona said that historical negationists "seem to have been given a collective task in [a] nation's cultural development, the full significance of which is emerging only now: To redefine [national] status in a changing world".[11] History is a social resource that contributes to shaping national identity, culture, and the public memory.