Explain the mystery about Roanoke island 

The origins of one of the America's oldest unsolved mysteries can be traced to August 1587, when a group of about 115 English settlers arrived on Roanoke Island, off the coast of what is now North Carolina. ... Perhaps, then, the colonists were killed or abducted by Native Americans

Explanation:

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.