First Imperial Age

The First [Imperial](https://robertsspaceindustries.com/galactapedia/article/VYLyPxQnpp-emperor-taunuasao-taoyusao) Age was the longest dynasty [Xi'an](https://robertsspaceindustries.com/galactapedia/article/ReJwN9KJEj-xian) history. Spanning almost fifteen thousand Xi'an years, it began with the crowning of the first Emperor Ru'a in MXY I.0 (19668 BCE), several years after the [loss of the Xi'an homeworld](https://robertsspaceindustries.com/galactapedia/article/VyvYA5qmqX-the-great-divide) RyiXy'an (Hyoton III) in 19770 BCE. During this era, the Xi'an discovered [jump points](https://robertsspaceindustries.com/galactapedia/article/0rqzJPaMpY-jump-point), established the [Civil Service (Pō't.ōngp.ū)](https://robertsspaceindustries.com/galactapedia/article/0dQJ96mOeZ-xian-service), codified the tenets of [Li'tova](https://robertsspaceindustries.com/galactapedia/article/VJOzBK4PLe-litova) into common law, and first [terraformed](https://robertsspaceindustries.com/galactapedia/article/R6dWOrLEM4-xian-terraforming) worlds outside their home planetary system. The Age came to an end in I.14680 (878 BCE), when Emperor Se'ang se Ru'a, the final heir of his house, stepped down to make way for Y.ah'a se Xy.ō, the oldest daughter of [her House](https://robertsspaceindustries.com/galactapedia/article/RXlXBrm5o1-house-xyo) and the first Emperor of the [Second Age](https://robertsspaceindustries.com/galactapedia/article/RAdjOk77n7-second-imperial-age).