The revolutionary wave of 1848 was crucial to the development of modern Europe. The Class, ethnic, and national tensions built over and then blew up often in spectacular fashion.
How do we have the whole continent of Europe from Russia to Spain collapse or at least fall into civil war and anarchy?
Or most of it anyway-the Russian and Hapsburg empires collapsing, civil war in France, the Balkans set aflame, war amongst the German states, civil war in Italy, civil war in Portugal and Spain. And war or revolution in Scandinavia?
If Europe falls into sustained anarchy what happens if and when the dust settles? Who will be victorious?