The world of SoaP in 1882.
Will Bavaria ever be apart of the German Empire?
Extremely interesting Alternate History!
Is Hokkaido the Republic of Ezo?
Bang on. The Imperial fleet that was sent to reclaim the island is delayed, and the rebels spend the intervening time fortifying Hakodate. The result is that the Imperials fail to take the city, and eventually are forced to begrudgingly recognise the island's independence.