<human>:  Who was the first person to be elected as a citizen of Athens?
<bot>: The first person to be elected as a citizen of Athens was Cleisthenes in 508 BC. Cleisthenes was a tyrant who was elected to lead the city of Athens after the end of the Peloponnesian War. He created a new system of government that included a council of 500 citizens. The council elected a council of 300, and these 300 elected a smaller council of 150. This council then elected the generals of the army.