Wrothgar

Wrothgar is a formable country, and can be formed by any nation with Orsimer as their primary culture. It is most commonly formed by playing as Orsimer State or Norvulk at any bookmark and going on to form Orsinium. Wrothgar is very powerful, especially with the Orcish Fury modifier, and dominates Central High Rock. Expansion can occur east into Skyrim, west against the Bretons and Direnii Elves, or South against the Corelanyan Clans. Later Conquest can move in literally any direction, although aggressive expansion will be an issue.

Additionally, if starting as Orsimer State their starting idea includes a colonist. Thus this nation is already well suited for colonizing northern High Rock and moving onwards to Yokuda and Coastal Tamriel. Because the orcs have a limited presence in High Rock aggressive expansion will be problematic unless the player keeps Orsinium ideas which have a powerful National Tradition of  -25  Aggressive Expansion Modifier.