Did Athens form a five hundred citizens council?

Yes, Athens established a council known as the Boule, which originally consisted of 400 members but was expanded to 500 citizens around the late 5th century BCE. This council was responsible for overseeing the day-to-day affairs of the city and preparing matters for the Assembly, where all citizens could vote. The Boule played a crucial role in the development of Athenian democracy, allowing more citizens to participate in governance.