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World War I was one of the great watersheds of 20th-century geopolitical history. It led to the fall of four great imperial dynasties (in Germany, Russia, Austria-Hungary, and Turkey), resulted in the Bolshevik Revolution in Russia, and, in its destabilization of European society, laid the groundwork for World War II.
With peace, people are freer to tour any country of their choice without fear of violence. ... World peace also contributes to the reduction of wars. Warring countries or internal nation conflicts can be reduced if world peace existed. War is the main cause of human suffering in the world.
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