The basic cause of the peloponisian war was

The most important and crucial reason why Peloponnese war was because Sparta was jealous of the increasing wealth Athens was acquiring. It rebuilt itself to conquer its allies. To become better and stronger.

Explanation:

Sparta was jealous because Athens was acquiring wealth and it did not set well with Sparta.

Upon receiving the wealth and seeing an increase in it, the Athens started bullying its allies as well. They wanted to become the best. They wanted to defeat everyone when it comes to war.

The Peloponnesian War started when a long series of conflicts between Athens and Sparta that lasted from 431 to 404 BCE, took the shape of war.

The primary reasons of the war were that Sparta feared the growing power and influence of the Athenian Empire. The Peloponnesian War began after the Persian Wars ended in 449 BC. The two powers struggled to agree on their respective spheres of influence for absent Persia.

This disagreement between the two led to friction and eventually took the face of war.

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