Not just the First World War, although it was the most concentrated debating ground for the most eloquent and expansive debaters in the world. Various schools of philosophy had flourished in the European countries, in a way possibly unequalled before in history barring the Warring States in China. Whereas someone managed to unify the Chinese kingdoms into a single identity, the post-Napoleonic settlement went for a balance of power (and before Napoleon, no-one had the strength to even think of unifying Europe). So all the debating was either confined to their own countries, or tested abroad outside Europe, where there was no risk of upsetting the agreed to balance of power. Debating topics such as liberal democracy, socialism, how many people we can kill and how can we kill more in less time, etc.
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