Those who do not know of the history of the Shadowland might thought that civilization of the Shadowlands only form after the Three Kingdoms.
This is an erroneous thought. Though one could understand it. The people who have the history books of what happened are the nobles and the only one who could read it, is people who are literate.
And most of the literate one are nobles
"Before the Three Kingdoms was founded there is no civilization on Shadowlands. It was a vast land with only darkness and Darkly Things that spawn from the Void of Darkness.
But then as year turns to decade, and decade turns to century, the Three Great Tribes Dark Hunters began to settle themselves in the Darkness of the Shadowlands"
This are the thoughts of people who knows nothing of the history of the Shadowlands. The Shadowlands itself is not a name they give themselves
But it was others that give them this name.