What was the purpose of the United Nations (UN)? O Establish economic Allies
O Devised a governing body to rule over the reunification of Germany
O Prevent the spread of communism
Protect its members and prevent future World War

The third one

Explanation:

The only other one it could be is the first one but the third one makes more since for the question

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.

answer; a farmer who refuses to fight in his country's army;