Sometimes one entity has to die for another to be born.
In the Balkans alone, the dissolution of the Ottoman Empire enabled the creation of ethnic-national territories, but it was close to a century later that the Yugoslav federation violently dissolved and Slovenia, Croatia, Bosnia and Serbia finally emerged as modern nation-states. As for the Ottoman’s eastern realm, it is said that if Arabs had drawn the maps after World War I, Iraq would never have existed anyway. But undoing… more