Question

What did the city fathers of Athens do to Araxagoras's teachings at the outbreak of the Peloponnesian War?

Answer 1

The answer for your question above would be : Banned the teaching of them

Araxagoras' does not believe the conservative Athenians belief regarding their gods. Back then, this was seen as a form of insult so they banned Araxagoras Teaching

Answer 2

The city fathers of Athens banned Araxagoras's teachings at the outbreak of the Peloponnesian War.

Anaxagoras was a Pre-Socratic Greek philosopher. Born in Clazomenae at a time when Asia Minor was under the control of the Persian Empire, Anaxagoras came to Athens.

Anaxagoras described the world as a combination of primary imperishable ingredients, where material variation was never caused by an absolute presence of a particular ingredient, but rather by its relative preponderance over the other ingredients.