In 1867, the Muscogee people adopted a written constitution that provided for a Principal Chief and a Second Chief, a judicial branch and a bicameral legislature composed of a House of Kings and a House of Warriors. Representation in both houses of this Legislative assembly was determined by tribal town. A new capital was established in 1867 on the Deep Fork of the Canadian at Okmulgee. In 1878 the Nation constructed a native stone Council House which remains at the center of the modern city of Okmulgee.