The modern Siduria came into existence roughly 10,000 years ago, in an event named Za’domar, or the Uplifting. Prior to this, the Siduria were essentially one race, though there were some discernible differences between the ancestors of the Mala’iduria and the Iduria.
Post Za’domar, rapid mutations spread throughout the Siduria. First and foremost, the pheromone hive mind came into existence, beginning the process of unification among all the Sidurian tribes. Second, the Zyduria slowly developed; revered for their stature and intelligence, Zydurian traits were cultivated among the population, eventually becoming a separate caste all their own. At the same time, the differences between Mala’iduria and Iduria became more concrete, leading to the formation of a distinct three caste society.
Sidurian civilization followed a predictable course after the rise of the Zyduria; much like human societies, first villages formed, then cities, then kingdoms and nations. Though the hive mind enabled greater communication, and encouraged the formation of large societies relatively earlier, Sidurians still mistrusted strangers, and war was not infrequent.
However, roughly 1500 years ago, as the first Sidurian empires rose in wars of conquest, In’iduria was struck by a meteor, impacting a few hundred kilometers from the planet’s north pole and obliterating the northern Sidurian empire. The cataclysm was named Xa’in’ladura—the Wrath of the Heavens. The impact wreaked havoc with the environment, massively destabilizing Sidurian civilization. Communication between empires was cut off, as each worked to save themselves.
As the Sidurian population began dying off, the species entered an evolutionary bottleneck. Though the circumstances are unclear, it was then that both the Ma’zyduria and the Inla’iduria came into existence. Though the Ma’zyduria were extremely frail and vulnerable, their control and understanding of the Sidurian hive mind was unparalleled. Coupled with their exceptional intelligence, the Ma’zyduria were able to seize Sidurian society and rescue it from the brink, using authoritarian measures and the power of the hive mind to maximize the Siduria’s efficiency and survivability. Coupled with the hardiness and numbers of the Inla’iduria, complete unification of the Siduria was achieved, and a fragile harmony with the damaged environment was maintained.
Post impact, the four remaining Sidurian empires reached an accord. Under the Ma’zyduria and the new five caste system, war was outlawed; all conflict would be mediated by and resolved through the Ma’zyduria. The talents of the Mala’iduria were turned to exploration and security, rather than active war. The Siduria spread planetwide, and even began extending underground, hoping to reclaim the buried oceans. With modern Sidurian civilization straining the limits of the planet’s scarce resources, the Siduria at last turned to the stars, and began working on the possibility of interstellar exploration and colonization.