Hathatyn

The Hathatyn were a confederacy of city-states in ancient Anatolia. City-states in the Hatvalley region were eventually annexed by the Ymaryn, forming the Hatvalley (Later Gulvalley) subordinate state before being absorbed as regular provinces. The rest of the Hathatyn eventually collapsed, following a series of crises, starting with a volcanic eruption.

It is speculated that they are a breakaway of the Highland Kingdom/Western Confederacy although this is unconfirmed.

Fall
The Hathatyn's fall was not due to any one cause, but a series of events that eventually resulted in their collapse, including a volcanic eruption in High Times, made worse by the Ymaryn's decision to absorb as many immigrants as they could and convince villages to switch allegiance in Come the rains, which caused the Hathatyn to fragment and enter a Heroic Age.

Their attempt in Horse daughter through Banners heralding change to reconquer Hatvalley region from the Highlanders and the Ymaryn further weakened them, as they were completely unsuccessful. Part of their loss was having to fight heroes from two different kingdoms at once.

Finally, the kingdom collapsed entirely as a result of climate change wreaking havoc in Competing interests.