The Rise of the Terran Empire by Poul Anderson

Nicholas van Rijn, the most flamboyant member of the Polesotechnic League of star traders, could see dark times ahead. Fellow league members were using tactics verging on outright piracy, and others were all too eager to sell starships and high-tech weapons to alien barbarians. A planet not previously known for interstellar commerce suddenly revealed a secret fleet of armed starships and started building an empire. Even if Van Rijn and his right-hand man, David Falkayn, could find a way to stop this blatant aggression, the glory days of the League were over. Hereafter, for its own protection against well-armed alien marauders, the Earth must maintain a strong military fleet, and one charismatic man would found an empire that would learn nothing of the lessons history taught about the fates of other empires as it began annexing other star systems, whether they wanted to join the Terran Empire or not….

1 • Mirkheim • [Nicholas Van Rijn] • (1977) • novel by Poul Anderson
209 • Wingless • [Avalon (Technic Civilization)] • (1973) • short story by Poul Anderson (variant of Wingless on Avalon)
221 • Rescue on Avalon • [Avalon (Technic Civilization)] • (1973) • short story by Poul Anderson
235 • The Star Plunderer • [Technic History] • (1952) • novelette by Poul Anderson
263 • Sargasso of Lost Starships • [Technic History] • (1952) • novella by Poul Anderson
315 • The People of the Wind • [Avalon (Technic Civilization)] • (1973) • novel by Poul Anderson