What reasons might a person have had to avoid using us military forces for n vietnam

We can use both social and economic reasons to avoid the vietnam war

Social reasons:

- It's not our business.  

The conflict between the northern and southern Vietnam was a civil war  that involved two different ideologies that fought for dominance in their home country. It's not our place to intervene.

- Our involvement in Vietnam war resulted in many deaths. Including both Vietnam's citizens and our own.

Economic reasons:

- The war took up a lot of government budget to the point where it drove our economy into a recession.

it's no easy i swear it's hard

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.