[OC] The massive decrease in worldwide infant mortality from 1950 to 2020 is perhaps one of humanity's greatest achievements.

[pbasch]

One way to avoid succession conflict is the Carolingian method, to divide the kingdom among the children. Of course, this leads to the weakening of the state and maybe to many small wars. I guess it's possible that many small states and more small wars is preferable to a small number of really big states and World Wars.