Since my previous newbie attempt at a Carolingian TL has sinked under a barrage of criticism, I humbly admit my inadequacy to the task, and retort by throwing the challenge to the forum: By which PoDs (as many as necessary, as long as non-ASB), after the birth of Charlemagene, can the Carolingian Empire survive as a great power and functional unitary state up to modern times ? * By 1300 it has acquired, assimilated, and remains in continued possession (barring temporary rebellions, military occupations, dynastic crises, etc.) of the territories of France, Germany (pre-WWII borders, without Prussia), Benelux, Switzerland, Italy, Austria, Bohemia-Moravia, and Slovenia up to 2009. * By 2009 it has acquired and assimilated Iberia, Poland, Croatia, Slovakia, and Hungary. * Evolves to be a functional unitary monarchy comparable to contemporary OTL France or England by 1500 and remains a functional unitary (federal) state up to 2009. * Spanish Reconquista does happen in the TL at least as quickly as OTL and Islamic states do not exist in Europe by 2009. * Europe is not conquered by Mongols or Arabs/Turks. * It experiences technological and cultural progress similar to OTL Europe, give or take a couple generations.