It took only 58 years from the first plane to the first time that human beings left the earth and entered space, and it took four years for human beings to walk in space for the first time, and it was only 66 years since human beings left the earth to set foot on another planet.
War is also about "profit", and profit comes from income minus costs. For example, Verdun made the French understand that the cost of war was high, but the Treaty of Versailles did not give France its due income, so although France was a victorious country, it was actually a loss.
After the First World War, France's appeal was to let Germany destroy the country, but France, which was exhausted of national strength, did not have the strength to resist Britain's continental balance of power policy, and Britain and the United States provided far more aid to Germany after World War I than France, on the one hand, it helped the rapid rise of Germany, and on the other hand, it also made France realize that if there was another German-French war, France would still shed dry blood, and the final fruit would still be Britain and the United States, and France would repeat the loss of one stop in World War II.
If France can get the result she wants in World War I, the French will probably not be afraid to come a second time, because there is something to earn, just like if you work hard to work overtime once but don't get overtime pay, then you will choose to play bad when you are asked to work overtime the second time, just like France in World War II.
Verdun did not bleed France physically, but spiritually bleed.
The Battle of Verdun wiped out the backbone of France, the Battle of Moscow and its subsequent battles wiped out the backbone of the Soviet Union (here refers to mature talents in their thirties and forties, and the consequences of these two battles are surprisingly similar, both of which make these two countries almost no one who can inherit the will of their predecessors, who dares to count on young people in their twenties in national affairs) To be honest, the war to aid Korea also caused us to lose a lot of backbones, which is also one of the reasons for the pile of bad things later. Because there are not many people who can check and balance the political leanings of one side or the other.
So this kind of war filled with pure human life is like a cancer cell, it will still affect the development of a country in the following decades, so I hate those who start wars and **, I think what they do is to destroy the human race, the development of multiculturalism, the common development of the culture of various countries and nationalities will have more possibilities.