History of Vistulzka
The history of Vistulzka can be traced back to written records of various traders from the Hernician Empire, who referred to the area north of the TBD mountain range as the Vistla. Attempts by the Hernician Empire to cross the mountain range and establish control into Vistla were unsuccessful, however there is evidence that of outposts along the mountain range and into Vistla by the Hernicians. Vistulzka was one of the first sites of the Wallish migration, where the Duchy of TBN was established and joined the Waldic Empire.
This was followed by the establishment of the Duchy of Pereya by Karpatskans and the Duchy of Géza by the Hetumoger. Before the formation of these duchies, the area had been inhabited by the Proto-Sarmats. Traders of the Hernician Empire were aware of people living in Vistulzka, and referred to the area as Vistla. The collapse of the Hernician Empire was a direct cause to the War of Cedynia that led to the Duchy of Sarmat to invade the Duchies of Pereya and Géza. The Treaty of Wełnica, one of the most important documents in Vistulzkan History bore a new state and the first modern iteration of the nation state, the Grand Duchy of Vistulzka in 922. Alongside the creation of the Grand Duchy was the Kingdom of Hetumoger.
In 953, the Treaty of Asotthalom was signed alongside the marriage of the Viswe-Karpatskan Casimir IV and the Hetumoger Sarolt II.