Third Telom War

The Third Telom War, also known as the 6 Year War was an interstellar war between the Ur-Han and the Surben Republic. It lasted from 2489 to 2495. It ended in an Ur-Han victory, which was its territories previously lost restored. 
The Mirdesh Federal elections of 2388 had an extremely pacifist government put in place. It declared that it would not get involved in any galactic conflicts. This would shape Mirdesh foreign policy for over 3 centuries, ultimately leading it to the period known as The Great Stagnation. In 2489, reassured by this prolonged stance of the Mirdesh, the Ur-Han declared war on the Surben Republic. The Surben had a smaller navy. They were able to repel the larger Ur-Han fleets on several occasions, but were never able to decisively defeat them. By 2492, the Surben forces were starting to get worn out, and in 2494 the Ur-Han defeated the Surben decisively on several occasions. The Surben capitulated a year later. 
The Ur-Han annexed once more the Surben duchy and the Telom duchy. However, they were no longer the sole galactic superpower. Since the end of the Mer-Sam'ti War, the Mirdesh Federation had experienced tremendous economic and demographic growth. It was the Federation's intervention at the peace talks that prevented the Ur-Han from fully annexing the Surben Republic. They Ur-Han now also had an eastern neighbour. This neighbour, the Terran Federation, was poorly understood by the Ur-Han, or any other known species. However, the humiliating trauma of the defeat of the First Contact War led to the Ur-Han not declaring war on the isolationist Terran Federation. The era following the war is known as the Long Peace, as no major conflicts arose between any galactic nations for nearly 2 centuries. The Ur-Han and Mirdesh also had smaller scaled ages of prosperity at this time, from the mid 25th century to the late 26th century. These are collectively called the Silver Ages.