Answer:
D. Jews all over Europe were rounded up and sent to concentration camps to be murdered.
Generally speaking, conflict between North Korea and South Korea was caused by a difference in "government systems", since the North was communist and the South was democratic.
Austro-Hungarian Empire
The Austro-Hungarian Empire collapsed after World War I, and the subsequent Treaty of Trianon established Hungary's current borders, resulting in the loss of 71% of its territory, 58% of its population, and 32% of ethnic Hungarians.
Answer: Conscientious objectors
The two results that the United States Involvement of 1961 provided to Vietnam are actually two. First, the treaty provided military aid in order to boost its manpower. Second, it's economical aid in order for the country to progress further.