Athens and Sparta were two great city-states in ancient Greece, and they were often in conflict. What was the cause of the Peloponnesian War in the 5th century BC?
A.
Athens blocked Spartan trading routes.
B.
Sparta feared the growth and the power of Athens.
C.
Sparta attacked Mediterranean allies of Athens.
D.
Athens kidnapped a high-ranking Spartan official.

The main reason for the launch of the war was the Spartan fear of Athens's growing power and prosperity. Athens rule over most of the Mediterranean region along with Greece/Hellas, 50 years preceding the war, instigated the war.

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B.

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