8. neoisolationists believe that the united states should
2. stay out of world affairs.
b. let foreign countries determine their own fates.
c. intervene in other countries' affairs.
d consider the interests of other countries.

neo-isolationists want to stay out of world affairs (a is correct).

Explanation: USA entered world politics (i.e. not only hemispheric politics) in Spanish-American world (McKinley and Theodore Roosevelt) which continued during the First World War (USA was one of Allies waging the War against Italy, Germany and Austro-Hungarian Empire). After the First World War USA decided for politics of isolationism. Situation changed during F.D.Roosevelt´s presidency (1941 Pearl Harbor). Since then USA are crucial super power in terms of world order. During the WW I a WW II term "isolationism" referred to European affairs. Today it refers to world affairs.

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