Which of the following was a reason the us adopted a policy of isolationism before world war ii?
a: the large number of american casualties in the spanish civil war
b: the large number of american casualties in world war i
c: the desire to get americans involved in world conflicts
d: the desire to americans travel to foreign countries

The answer is option B.

The large number of American casualties in world war 1.

Explanation: US adopted a policy of isolationism which was to stay away from any European or Asian conflict. The policy was adopted after the end of world war 1. The massive number of US casualties had shaken the people of US. There was also a effect of Great depression which caused a economical crisis. These reasons led America to adopt a policy like isolationism. However, the large number of casualties led USA to adopt this policy.

The correct answer is B.

The US adopted the isolationist approach in foreign affairs after WWI.

This approach was adopted in the US after the failure of President's Wilson internationalism that, although Wilson made efforts to avoid it, made the US got involved in WWI, and this caused many human losses.

On the other hand, isolationism aimed to avoid economic or political  entanglements with foreign countries.

i also think it is c

four sitting presidents have been assassinated while in office but the first was abraham lincoln,