Which of the following explains a contributing cause shared by all these events? A. Christopher Columbus sailed to San Salvador island in the Bahamas in 1492 B. Nicolas Copernicus proposed that the earth orbits the sun in 1514 C. Joan of arc joined the siege of Orleans in 1429 D. Johannes Gutenberg invented the printing press in 1439

to protect the united states' role as a world leader, president truman wanted to prevent the soviet union from spreading communism beyond its post-world war ii boundaries. he declared that the united states must assist any nations struggling to prevent a communist takeover.

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.

d.

the northwest territory became the most densely populated area in the u.s.