Play Kaiserreich as the American Union State, then once you defeat the other factions, go down the Pelley route, conquer all of North America, grab some allies, and take over the world.
Yes, it's the Victoria 2 mod, maybe you could play as Beornia (English argentina) and reconquer the british isles, or play as Lusitania (Portuguese texas and a releasable nation from Gran colombia) and conquer portugal+galicia, and yes the mod has a lot of "return home/reconquer lost land" campaigns
Two Words: Possadist Brunei
Vic2-hoi4 as Australia
France in The Gates of Versailles?
Manchu Restoration (Yan Xishan and YCP Qing)