Which best describes the purpose of ambassadors?

Charged with the responsibility of maintaining diplomatic relations, an ambassador represents the president in matters of foreign policy. Ambassadors help to promote peace, trade, and the exchange of information between the United States and foreign lands.

the best description of postwar writers might be progressive.

following the war, writers showed a tendency to work on artistic or social matters rather than political themes. while postwar literature may not have been the greatest period of english literature, the themes provided excellent critics a high number of novels. such examples include anthony burgess, anthony powell and frank kermode, all of which can be placed under the progressive view.