What are circumstances in which us intervention can be , and what are some circumstances in which it can be ineffective or even destructive ?

It can be helpful when:

It can be ineffective or even destructive when:

There were many things that got success and there are some thing that did not get success.

The Successful things are US intervention is successful when humanitarian efforts are the focus or when the countries people have requested aid. This is true of places like the Balkans where the health of the people was the focus and refugee assistance was also available/possible. US intervention was not successful when they enter a conflict with a political or economic focus. The people of the area are often against our presence and are not accepting of US help. This is especially true in the case of civil war such as Vietnam.  

Not successful--US intervention is not successful when they enter a conflict with a political or economic focus. The people of the area are often fighting against our presence and are not accepting of US help. This is especially true in the case of civil war such as Vietnam.  

Explanation:

the answer is c     : )

explanation:

i don't have an explanation because i don't know, but i think the answer is c because i googled it and google is right : ) just kidding google isn't allways right but the answer is still c. i hope this !

answer is 1935

because gandhi led a march the sea in 1930 and 5 years later he did it again