Im guessing D and B but i dont know

richard nixon led the investigation that resulted in alger hiss being convicted of prejury.

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.

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.

if i am correct the answer is going to be a) the federal program of reconstruction ended.