SUBSTANTIATION:（）

A．signal his reservations about the way these terms have been used to define geography through human categories
B．draw attention to the discrepancies between the way historiographers treat the supra-national and sub-national levels
C．emphasize historiography's unique tendency to rely upon social categories to draw geographic distinctions
D．question the notion of the spatial marker itself by asserting the general ambiguity of these terms
E．argue for the replacement of these terms by historiographers with more politically correct substitutes

A．cite the case of a "primitive" or "barbaric" nation being distinguished from a "civilized" nation
B．provide an example of a state whose borders do not perfectly coincide with those of a nation
C．offer an example of the characteristics of a nation being applied to a particular area of the nation
D．present a case of a single region being treated by historiographers as representative of an entire nation
E． describe the case of a nation whose cultural and political identities distinguish it from a contiguous state

A．What do historiographers consider to be the precise difference between a nation and a nation-state
B．What concepts in the field of historiography are considered unambiguous
C．Are tribal areas without national spatial markers ever represented as nations
D．What is an example of a nation represented in supra-national units
E． How does the establishment of national spatial boundaries produce political problems