The progress of mankind depends on war or peace.

The progress of mankind depends on war. If there was no war, human development might still remain in feudal society, and all human development was based on war. Every large-scale war has made social civilization and science and technology take a big step forward. For example, space navigation, space exploration and various tools related to human life are all products of war. In primitive society, it was the war that made the big tribe annex the small tribe into a whole, promoted the great integration of the nation and made the social culture develop by leaps and bounds. In modern times, the war reached its peak, making the development of human society advance by leaps and bounds. But humans don't need war. What he brought to many people was not happiness but disaster. Now mankind needs to develop in a peaceful environment.