Galactic History 21: The Birth of the Mandalorians
The culture of the gray-skinned Taung species had always been defined by conflict, even before their days battling the Battalions of Zhell on Coruscant. For millennia, striking out from the world they called Mandalore, the Taung explored and conquered new worlds, seeking new opponents to test themselves against.
Over time their philosophy of battle grew and changed, and a new cadre of elite warriors emerged. Known as the Mandalorian Crusaders, these warriors were honed by years of battle and guided by a strict code of honor. Wild stories began to spread throughout the Outer Rim of soldiers who could disappear into forests, face terrifying beasts without a trace of fear or even capture an entire planet in a day.
These tales were the first time the name "Mandalorian" became widely known. Although the Taung themselves went into decline and eventually disappeared, they left behind followers trained as they were. Ever after, the Mandalorians were a people to be respected, and feared.
Galactic History 22: The Second Great Schism
The Jedi Order had already faced one great schism in its history, against the fallen Xendor and his Legions of Lettow. Although Xendor had been gone for centuries, there were uneasy stirrings in the order's ranks. A group of Jedi had learned to use the Force to shape living beings, twisting them into horrific monsters.
These Dark Jedi were swiftly exiled, but they retaliated by raising an army of their monstrous creations and unleashing them against the rest of the order. The Jedi fought back, finally driving the Dark Jedi to a last stand on the planet Corbos.
Victory would not have been certain even then, but the Dark Jedi had begun to turn against one another. Without a united front, they were overwhelmed and scattered. Although the Jedi cheered their victory, it was later discovered that many of the Dark Jedi had fled Corbos, leaving no trail for anyone to follow.
Galactic History 23: The Sith Order Begins
Exiled for horrific dark side experiments, a group of Dark Jedi made a last stand against the Jedi Order on Corbos, where they were ultimately defeated. The survivors fled beyond the borders of Republic space and, seeking a refuge, they discovered the planet Korriban-home to the red-skinned Sith species. The Sith looked on the Dark Jedi's Force abilities with awe, and worshipped them as gods.
Led by the fabled warrior and tactician Ajunta Pall, the Dark Jedi began forging the Sith into a glorious civilization, built on the principles they had established after breaking with the Jedi Order. They ordered the construction of great monuments on Korriban-vast cites that did not survive the ages, glorious temples and elaborate tombs.
As time passed, the Dark Jedi and the Sith species intermarried, until there were few true purebloods remaining. Eventually, there were only small physical differences between them. There were only the Sith strong in the dark side of the Force, and their new Sith Empire.
Galactic History 24: Empress Teta
The Republic had enjoyed a long period of peace during the Manderon Period, but the Koros system was rapidly becoming a problem. Although the planet Koros Major was stable, growing wealthy on carbonite exports, the other six worlds of the system were poor and increasingly lawless.
The task of uniting the Koros system was accepted by a noble famed for her military achievements. Empress Teta was the heir to Koros Major and was determined that the rest of the Koros system would share its prosperity. To that end, Teta began the Unification Wars, hoping to bring the entire system under her rule. She was ultimately successful, though she had to fight a long and bloody campaign to conquer the planet Kirrek.
Empress Teta would become known as one of the Republic's boldest commanders. The Koros system was eventually renamed after her.
Galactic History 25: Two Rivals
As the Sith Empire grew in power, few Sith inspired fear as Marka Ragnos, a tyrant who ruled for a century. His death created a power vacuum, leaving the Sith Lords Ludo Kressh and Naga Sadow vying for supremacy.
During Marka Ragnos's funeral on Korriban, Sadow and Kressh fought a duel, each claiming he was more fit to be Dark Lord of the Sith-the then-unique title of the Empire's ultimate ruler. But the spirit of Ragnos himself appeared, claiming a golden age of the Sith was coming. Moments later, the funeral assembly was alerted: A Republic ship had been captured.
The ship belonged to two hyperspace explorers, the siblings Gav and Jori Daragon, who stumbled on Korriban. As the Sith Council debated the Daragons' fate, Naga Sadow saw opportunity. The hyperspace routes leading to the Republic had been lost; the Daragons were his chance to rediscover them.