The 20th century is also characterised by mass democracy and more "socialist" policies vis-a-vis the monarchist and capitalist counterpart the 19th century.
In his Democracy: The God that Failed, Hoppe argues that democratic governments are essentially caretakers of the nation in question, whereas monarchs are the private owners of the government in question. Hence monarchs will tend to persue policies that will maximise both current output and their future capital value.
With respect to war, monarchy was also superior to democracy:
war became limited and circumscribed by a system of precise rule. It was definitely regarded as a kind of single combat between the two armies, the civil population being merely spectators. Pillage, requisitions, and acts of violence against the population were forbidden in the home country as well as in the enemy country. Each army established depots in its rear in carefully chosen towns, shifting them as it moved about; . . . Conscription existed only in a rudimentary and sporadic form, . . . Soldiers being scarce and hard to find, everything was done to ensure their quality by a long, patient and meticulous training, but as this was costly, it rendered them very valuable, and it was necessary to let as few be killed s possible. Having to economize their men, generals tried to avoid fighting battles. The object of warfare was the execution of skillful maneuvers and not the annihilation of the adversary; a victory obtained by a clever combination of movements, was considered the crowning achievement of this art, the ideal pattern of perfection.[35] . . . It was avarice and calculation that made war more humane . . . . [W]ar became a kind of game between sovereigns. A war was a game with its rules and its stakes—a territory, an inheritance, a throne, a treaty. The loser paid, but a just proportion was always kept between the value of the stake and the risks to be take, and the parties were always on guard against the kind of obstinacy which makes a player lose his head. They tried to keep the game in hand and to know when to stop.[36]
In short, whereas monarchical wars were solely the king's affairs, democratic wars tend to be total wars - the distiction between combatants and non-combatants is blurred, and conscription became the norm rather than the exception.
But on war prevention, see Mises:
[FONT=RaleighLtBT][SIZE=3][COLOR=#231f20][FONT=RaleighLtBT][SIZE=3][COLOR=#231f20][FONT=RaleighLtBT][SIZE=3][COLOR=#231f20][W]henever the inhabitants of a particular territory,
whether it be a single village, a whole district,
or a series of adjacent districts, make it known, by
a freely conducted plebiscite, that they no longer
wish to remain united to the state to which they
belong at the time, their wishes are to be [FONT=RaleighLtBT][SIZE=3][COLOR=#231f20][FONT=RaleighLtBT][SIZE=3][COLOR=#231f20][FONT=RaleighLtBT][SIZE=3][COLOR=#231f20]
respected and complied with. This is the only feasible
and effective way of preventing revolutions
and international wars. (Ludwig von Mises, Liberalism)
[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT]