Helvetia is a formable nation in Central Europe, representing a unification of the Helvetian tribes of the Swiss plateau. It can be formed by any Helvetian cultured country that can unite the core provinces of the area, in 450 AUC divided between a number of different tribes such as Tigurinia, Verbigenia, and Allobrogia. A united Helvetia would have a strong and strategic position straddling the border between Gaul, Italia, and Germania, ready to resist any enroaching empires that may come.
Historically, Helvetia was united by the 2nd century BC as a tribal confederation including Tigurinia, Tougenia, and Verbigenia. Coming under pressure from Germanic tribes, the Helvetians would make an attempt to migrate to from their Alpine homes to the west of Gaul in 58 BC, sparking conflicts with the Aeduia and its allies in Rome that would mark the beginning of the Gallic Wars and the Roman conquest of the rest of Gaul. Subjugated and firmly annexed after the rising of Arvernia under Vercingetorix, the Helvetians would form a civitas as part of Roman Gaul until disappearing with the fall of the Roman empire, though the memory of this alpine state would eventually be revived by the Swiss.
The clans of the Helveti have built a strong civilization in the hills of Transalpine Gaul, yet in order to combat the growing threat of empire, a strong leader must emerge to challenge the status quo between constituent tribes. Only in this way, will we avoid the extinction of ways.