In 1948, a Constitution was adapted. It organized the tribe as a General Council (Tribal Council). The General Council had the executive, legislative, and judicial powers of the government. It was made up of all adult members of the Crow Nation. To be members of the General Council, females had to be 18 years or older and males had to be 21 or older. The General Council was a direct democracy, similar to that of ancient Athens. A chairperson was elected once every two years.