The Retahna are a race that heralds from the spanish, portuguese and other similar descents including many gypsy families.
The Retahna clan of mankind, when other clans were settling into home worlds, devoted themselves to spacefaring and the exploration of the galaxy. During the exodus the Retahna fleets were often at the vanguard of the human exodus fleet, and many galactic finds are attributed to Retahna explorers. Because of this, the Retahna government doesn’t exist on a home world, but instead on a home fleet. Astrum Domus, the immense flagship of the Rethana fleet, dwarfs any other man-made structure in the galaxy, easily the size of a small moon.
So committed to their lives in space, the Rethana have very few assets in colonies throughout the galaxy. The few colonies that are owned by the Retahna are used for resupply and maintenance of their fleets, so nearly all of them are mining, farming, or the rare scientific outpost. Because of this, the Retahna hold the least amount of colonial votes in the GA council, but due to the Nomoniv not having a strong structure of space faring colonial vessels many of the Nomoniv colonials hitch rides with Retahna vessels and use them to transport terraforming and colonization materials. Due to this synergy between the Nomoniv and Retahna, many political choices are made with the consent of both of these races. Additionally, due to the extended time it takes Nomoniv colonies to agree on larger matters if something needs action immediately they will defer to the opinions and policy of the Retahna. This has led to many stating that the Rehtana are in fact the second most influential race, even without having many colonies.