Citizens that could participate in government in Ancient Greece were usually men who were free-born in that city. Women, slaves and (usually) residents born elsewhere, did not have the right to vote. Details differed between cities. Athens is an example: The residents of Athens were of three groups: citizens, metics (resident aliens) and slaves. Citizens were residents whose forebears had been Athenians for three generations. Male citizens had the rights of free men and could be chosen to fulfill any official state position. "Of the estimated 150,000 residents of the city state of Attica, only about one fifth held the privilege of citizenship". Women who were citizens in Athens could not participate in political offices, but in Sparta they could.