The Peloponnesian War was caused by three main reasons. Name one.

The reasons for this war are sometimes traced back as far as the democratic reforms of Cleisthenes, which Sparta always opposed. However, the more immediate reason for the war was Athenian control of the Delian League, the vast naval alliance that allowed it to dominate the Mediterranean Sea.

Explanation:

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.