The major impact was the rise of national identities following the revolutionary wars and Napoleonic conquests. The same population who took part in the Terror voted happily for noted autocrat Napoleon, then lived under kings of various levels of mediocrity, briefly under a Republic before electing the then-President Emperor (because that turned out so well the first time), before returning to a Republican regime after being beaten by Bismark. The current blend of social democracy (though less and less social these days) has little in the way of direct filiation with the original French Revolution.