Tallaan was a voting member of the League of Tapani Freeworlds.
Tallaan's population was very independent-minded, and treated neighboring nobles and others with inherited titles with a polite courtesy at best. They also took offense to the suggestion that their world gained its wealth solely due to its position on intercepting shipping lanes, preferring to credit their world's success on its peoples' strong work ethic.
Tallaan had a large number of temporary inhabitants, who lived on the planet part of the year to manage trades and transfer cargo. Tallaan had a large alien population, and there were many enclaves on the planet where aliens gathered to live among their own kind. This contributed to the vibrant culture of Tallaan, it was a good place to emerge oneself in, for example, Herglic cuisine.
Tallaan's government consisted of the Trade Commission, a council which elected one of its own as First Executive to lead the planet. While on paper the council members represented the people of their electorate, they most often spent their time and energies seeing to the needs of the various corporate interests in their respective communities. The Ministry of Orbital Commerce was widely considered the most powerful administration on Tallaan due to it overseeing the orbital stations, shipyards, and the millions of financial transactions associated with them each day, such as the massive portion of Tallaan's dockyards leased by the Thyferran government to inspect transported bacta, which by law could not be done in Thyferran space.
As the most powerful and strategically-placed system in the Freeworlds Territory, Tallaan accordingly had the largest planetary military in the sector, and indeed had one of the largest planetary navies in the entire Colonies Region. Tallaan contributed the largest number of vessels and units to the Freeworlds Common Navy. During the height of the New Order it consisted of twelve Tapani-class assault frigates and two Tapani-class carriers, each with a standard complement of 40 Manta-class assault starfighters. Backing these up were numerous smaller vessels including Carrack-class light cruisers, and corvettes. Its starfighter fleet also included TIE/LN starfighters, GAT-12 Skipray Blastboats, Z-95 Headhunters, and BTL Y-wing starfighters.
Tallaan derived most of its economy from trade, being situated at the intersection of several important hyperlanes. It was the most active trading world in the sector. It also had prominent mid- and high-tech industries of its own. Tallaan hosted several prominent spaceship manufacturing firms (including the Tapani Starship Cooperative) as well as companies that made vehicles such as tractors and transports, and repulsorlift vehicles such as speeders. Since Tallaan was able to obtain raw ore at very low prices, its goods could be manufactured and sold far under standard galactic prices. Though there were superior and better-established brands around, Tallaani vehicles were popular in the Colonies and Inner Rim because of the low prices and high quality.
In 4000 BBY the Tallaani Shipyards were established in orbit around the planet.[source?] Tallaan would remain a prime manufacturer of starships throughout the centuries of Republic rule and retained its facilities during the reign of Emperor Palpatine. The Empire and the Tallaan government worked together to maintain system security, but the arrangement was not well-liked by Tallaan patriots.
After the destruction of the first Death Star in 0 ABY, the New Order Progressive reported that Grand Moff Wilhuff Tarkin and his staff died in a shuttle accident at the Shipyards here, rather than over Yavin.
Tallaan was also the home to the 1st Tapani Assault Battlegroup.
The planet was not attacked by the Yuuzhan Vong during their invasion, and, following the Battle of Coruscant, New Republic Admiral Garm Bel Iblis made his headquarters there, protecting the sector while operating independently until a decisive engagement at Ebaq 9.
Ships from Tallaan were used in various engagements leading up to the end of the Yuuzhan Vong War, particularly around the time of the Battle of Yuuzhan'tar.
In 40 ABY, Tallaan was developing and manufacturing warships for the Bothan government, to be used in the Confederation's war against the Galactic Alliance. During the course of the war, Tallaan, along with the rest of the Tapani Sector, joined the Confederation.
- "Centripetal Drive" - Troll Magazine 2 (First appearance)
- Darth Bane: Rule of Two (Mentioned only)
- "Galaxywide NewsNets"—Star Wars Adventure Journal 3 (First mentioned)
- "Galaxywide NewsNets"—Star Wars Adventure Journal 7
- The New Jedi Order: Destiny's Way (Mentioned only)
- The New Jedi Order: The Unifying Force (Mentioned only)
- Legacy of the Force: Sacrifice (Mentioned only)
- Cracken's Rebel Operatives
- "Into the Core Worlds"—Star Wars Adventure Journal 7
- Player's Guide to Tapani
- Lords of the Expanse
- Tapani Sector Instant Adventures
- The Complete Star Wars Encyclopedia
- The Essential Atlas
- Galaxy of Intrigue