My hometown is St Louis, which is the largest city in Missouri. I could see it becoming the capital of an independent Missouri Republic if the CSA won the Civil War. The North, defeated and blockaded by foreign powers, is forced to cede Missouri and Kentucky to the South. However, Missouri, with its large number of free-soilers, and its hybrid culture, declares its independence from the CSA. Then, in 1894, a huge fire nearly destroys Jefferson City. The national government flees to St. Louis, which is established as, first the temporary, then the permanent capital. Missouri will eventually merged back into the USA after an agrarian socialist revolution breaks out in 1919, and US and British troops intervene to crush the socialists.