The Tribal assembly () dates from time immemorial, as no ancient historian mentions its establishment. In the early Republic, there were four urban tribes and 17 rural tribes. In 241 BC, fourteen rural tribes were added, bringing the total to thirty-five. The "tribes" were not ethnic or kinship groups, but rather a district to which people were assigned. A citizen's tribe was inherited from his father, and only changed upon adoption or reallocation in the census; over time, this meant that tribal affiliation had little relationship to a citizen's home or even place of birth. The vast majority of legislation was enacted in the "comitia tributa", which also elected quaestors, curule aediles, and military tribunes.