In the 23rd century, the Troyian governmental arrangement included a ruler and the Troyius Tribunal. Troyians maintained a friendly diplomatic relationship with the Federation, during a period of conflict between the Federation and the Klingon Empire over control of the Tellun system.
Troyians had a history of war with their neighboring planet of Elas, and considered the spartan Elasians to be arrogant and primitive compared to the more civilized and polite Troyian society. By 2268, new technological developments made the mutual destruction of the Tellun worlds a possibility. In order to foster a lasting peace, elements of both governments supported an arranged marriage of Elaan, the Dohlman of Elas, to the ruler of Troyius. (TOS: "Elaan of Troyius")