The Annals of time are full of the history of the Dragonborn.
The current iteration is greatly changed since Frick became Empress in 1102 5A. Prior to her control the Dragonborn Empire of Omarond was a blood thirsty lot. they believed that what you captured or killed was yours.
During the reign of the minotaurs’ leader Ambeoutin XI they regained a great measure of power. The Dragonborn were responsible for the rise of the usurper to the throne. When the dragons returned to Ea-reth, during the Night of Falling Stars, many saw this as a sign the Dragonborn’s actions were just.