For RabbitonFire.
5990: Thalsian, also known as the First Priest of Dumat, is the first known person to wield blood magic, and the first Magister. The Archon claims to learn this art after personally communicating with the Old God. The power he gained from blood magic allowed him to spark the birth of a future empire under his rule.
6185: Darinius, the High King of Neromenian, takes control of the Tevinter throne, uniting the kingdoms of Neromenian and Tevinter under his rule.
6400: Darinius of Tevinter forges an alliance with the dwarves.
6405: Darinius unites the kingdoms Tevinter and Qarinus, forming the mighty Tevinter Imperium. He declares himself the first Archon. The Dreamers learned the use of lyrium to enter the Fade from elven captives, and these dreamers later became the first of the Imperium’s ruling Magisters.
6619: The hostility that festered between the Tevinter Imperium and the elves finally turned into open war. Armies of the Imperium surrounded the fabled elven city of Arlathan.
6625: The Magisters resorted to a horrifying blood ritual that sank Arlathan into the earth, destroying it utterly and deciding the war in their favor. The conquest of the elven kingdom was complete: All those who did not perish with their city were enslaved, their spirit crushed and their ancient culture destroyed forever.
6702: The Tevinter Imperium expands rapidly, bolstered by its new elven slaves. The Imperium takes nearly all of northern Thedas and begins the conquest of lands across the Waking Sea.
EDIT: So yeah. Ninety years of the four human kingdoms of Tevinter, Neromenian, Barindur, and Qarinus, formed by the Neromenian tribes. Barindur is lost to a volcano. And Tevinter becomes the most powerful and absorbs them, forging the Tevinter heartland. A few decades after the Tevinters form an alliance with the dwarves, (coincidence?) the war with Arlathan begins. Interestingly, it lasts for a few years, rather than the effortless sweep that the Vints like to paint it as. Complicating this is Abelas's admission that Arlathan was already in decline and the Elvhen destroyed themselves. We don't have any dates on that, sadly.