Which situation best illustrates a nation' s attempt to maintain a policy of isolationism?

Answer:

The situation that best illustrates a nation's attempt to maintain a policy of isolationism is the passage of neutrality legislation forbidding arms sales to the nations those are participated in the war.

Explanation:  

After the world war I,  United States had seperated themselves and stopped to getting involved in the conflicts that happened between any two nations.  

Owing to economic depression United States had to face the public after world war I, the opinion of the public demanded the US government to stay out of any international activities that may result in consequences like the Great Depression.

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.