Why is the Spring of 1917 considered a turning point in the course of World War I?
A) German submarines breaking British blockades.
B) Turkey's collapse and the US entry into the war.
C) Russia's collapse and the US entry into the war.
D) The use of the machine gun in trench warfare.
E) Germany's movement to isolate the British from their other allies.
Question 2
What type of rule did the caliphs establish after Muhammad's death?
A) Islamic oligarchy
B) Islamic monarchy
C) Arab Islamic theocracy
D) secular Democracy
E) Arab Islamic dictatorship
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