Comitia were assemblies of the people of ancient Rome. The oldest one, the Comitia Curiata, confirmed the selection of kings and approved important decisions. Both the Comitia Centuriata and the Comitia Tributa elected officials, voted on issues, and made laws. The Comitia Centuriata, organized according to wealth, dealt with more important issues and officials. The Comitia Tributa, organized by tribes, became the most important lawmaking body.