Ba'Ku

The Ba'ku people were a technologically advanced humanoid civilization. In the early 21st century, the race developed the means of building weapons of mass destruction and was on the brink of self-annihilation. A small enlightened group of the Ba'ku people escaped this horror and found an isolated planet.
This group of Ba'ku followed a simple way of life and disdained the use of technology. (As shown in the film Star Trek: Insurrection, however, the Ba'ku still possessed some form of technology and the ability to use it in emergencies, since they had attempted to repair the damaged Data.) At first, the Ba'ku were unaware of the metaphasic radiation in the planet's rings, which caused their aging process to significantly decelerate, although it was later discovered and cherished.
The Ba'ku society consisted of strong bonds between each individual as there were less than a thousand living in a village. Their simpler way of life eventually prompted some of the younger Ba'ku villagers – who wanted to explore the galaxy with offenders – to rebel against their elders, and an attempt was made to take over the village. When they were unsuccessful, they were exiled and eventually became the Son'a people.
In 2375, peace on the Ba'ku planet was restored and several members of the Son'a returned to their families.