He was a German soldier despite having an Austrian citizenship
Explanation:
A "Red Scare" is the promotion of a widespread fear of a potential rise of communism or anarchism by a society or state. ... The First Red Scare, which occurred immediately after World War I, revolved around a perceived threat from the American labor movement, anarchist revolution and political radicalism.
e) sounds like the best choice.
The Sahel was the last area in the northern parts of Africa, where vegetation can survive and where people were living at the time. Following the Sahel to the North one can find the Sahara desert which is a natural barrier that no invading force could trespass.