I can't really help with several of these questions because they are all subjective, but I can answer the first one.
Following World War I, the League of Nations was established to aid in the maintenance of peace and the resolution of international disputes. After WWII, the United Nations was in the same boat. There were also the peace accords that brought the conflicts to a close. (You'll have to evaluate whether these were successful or not.)
<span>Even experienced citizens need legal support. </span><span>The legal process is complicated. </span><span>Citizens are more likely to be convicted without counsel. </span>
Ultimately, the end of the Vietnam war resulted in communist control of Cambodia,Laos,and Vietnam. The Vietnam war was fought between 1st of November in the year 1955 to 30th of April in the year 1975.