World War I, which occurred between 1914 and 1918, had a major impact on the world. The consequences of these conflicts include profound political, social, and economic changes in various countries. One major result was the collapse of several empires, including the Austro-Hungarian Empire and the Ottoman Empire. As a result, the political map of Europe and the Middle East experienced drastic changes with the formation of new countries. Apart from political changes, this war also had significant social impacts. In many cases, women’s role in society increased as they took over jobs previously dominated by men. After the war, many countries began ratifying voting rights for women in recognition of their contributions during the conflict. From an economic perspective, World War I caused enormous material losses. The costs of the war and post-war recovery weighed heavily on many countries, leading to inflation and economic instability in some areas. For example, Germany experienced hyperinflation in the early 1920s, which contributed to the rise of social discontent that eventually gave rise to extremist political movements. Valuable lessons from World War I include the importance of diplomacy in establishing international relations. Diplomatic failures and complex alliances contribute to conflict escalation. Therefore, the importance of dialogue and peaceful settlement in international relations becomes clearer. This war also reminds us of the enormous impact of technology in modern conflict. New weapons such as machine guns, poison gas, and tanks changed the way warfare was fought, providing lessons about the need for regulations regarding the use of technology in war. Ultimately, the human price to be paid was enormous, with millions of lives lost. From this perspective, respect for human rights and efforts to maintain global peace are very important. Awareness of the impact of war is not only felt by the countries directly involved, but also by the whole world. Understanding the history of World War I is important to prevent mistakes from being repeated in the future.