Someone help fast! Which of the following might influence an author's historical perspective?
A. a major world war
B. the region where the author lived
C. the author's favorite pastime
D. a newspaper article

the answer would be A

Explanation:

hope this helps :)

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

answer; ///associate's degree;