1. Underlying themes? (Late 18th Century, Mid 19th Century, or 20th Century) 2. Who should be leader? And should there be 'Lincoln VS Davis' too? 3. What should be their Unique Units? - Mine might be the Yellow Legs (US Army Cavalry), which distincts in that they were immune to any Anticavalry maluses (they never do melee saber cavalry charges AT ALL! actually they were developed after British Light Dragoons (still Mounted Infantry by the time other 'dragoons' became actual Heavy Cavalry) ), and can build a fort.. Note that 'Rough Riders' in Civ6 are more correctly represented by this unit. 4. What should be their Infrastructures.?