The term "democracy" first appeared in ancient Greek political and philosophical thought in the city-state of Athens during classical antiquity. The word comes from demos, "common people" and kratos, "strength". Led by Cleisthenes, Athenians established what is generally held as the first democracy in 508–507 BC.
https://en.wikipedia.org/wiki/Democracy#:~:text=The%20term%20%22democracy%22%20first%20appeared,democracy%20in%20508%E2%80%93507%20BC.