Technological Nomads

"'Ghazu is largely steppe. Its inhabitants are the only known beings who, nomadic, independently developed high technology.'"
-Poul Anderson, For Love And Glory (New York, 2003), I, p. 18.

That sounded familiar. See:

Interstellar Relations In The Local Civilization-Cluster

Kandemir: A Merseian-Terran Synthesis In Another Timeline

Kamdemirian nomads became spacefarers while remaining nomads because they were contacted by spacefarers. I think that there is more to Kandemirian society than that but I will have to check by rereading the relevant chapter of After Doomsday. Most references to nomads (scroll down) on this blog are to the interstellar Nomads in the Psychotechnic History.

On second thoughts, searching the blog for "Kandemir" brought up:

Civilization-Clusters

- which explains how, on Kandemir, technological nomads were able to dominate the cities.