When the Austro-hungarian empire dissolved after WWI, why didn't the Czechs and Slovaks form two separate states, like we have today with Czechia and Slovakia?
You might find this thread , with comments by u/kieslowskifan and u/kaisermatias, helpful: https://www.reddit.com/r/AskHistorians/comments/2apppv/why_was_czechoslovakia_created_as_a_union_between/?ref=search_posts