So from my research I've come to the opinion that King Alfonso XII was Spain's only competent Monarch for the entire 19th century. He managed restore confidence in the monarchy, create a stable regime that would last until 1931 and stabilize the economy, not to mention continue industrialization. Truly his early death was a tragedy for his nation. So what if he had lived longer, at least into his 60s. How would 30 + years added to his reign change Spain?