Before becoming King of the French in 1575, Henri III de Valois was elected King of Poland-Lithuania in 1573. However, when he took the throne in Paris, he dropped his in Warsaw.
What if he hadn't? What if the French Royalists had had the ressources of Poland to crush the Guisard Ultra-Catholics? (Protestants under Henri de Navarre were not a threat as their goals was the same as the King's).
What if Henri III had manage to maintain a France-Commonwealth personnal union going on even after his death? (He didn't have any male issue, and his heir was his cousin Henri de Navarre)
What if he hadn't? What if the French Royalists had had the ressources of Poland to crush the Guisard Ultra-Catholics? (Protestants under Henri de Navarre were not a threat as their goals was the same as the King's).
What if Henri III had manage to maintain a France-Commonwealth personnal union going on even after his death? (He didn't have any male issue, and his heir was his cousin Henri de Navarre)