Answer:
A. Isolationist approach to the first world war
The form of expansion and imperialism in the year the 1900s was not related to the isolationism in WWI.
Option A is the correct answer.
What was isolationism?Isolationism referred to the ideology in which the US country was not get involved in the warfare of other countries.
In the early 1900s, the US country practiced expansion and imperialism which was also called the new imperialism. It was termed the colonial rule exercised by the US country, Japanese country, and European countries.
Therefore, the isolationism in WWI was not a form of expansion and imperialism applied by the US country in an ancient era.
Learn more about imperialism in the related link:
https://brainly.com/question/1225474
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In the United States from 1865- 1945, what was one positive characteristic of the country and what was one way that the country needed to improve?