The idea of ​​creating an international organization with the aim of maintaining order and security in the world has occupied the minds of humanity since ancient times. This idea was realized in 1919 in the form of the League of Nations, which did not become an effective instrument of international cooperation. After World War II, the whole world had to establish new methods of combating global terrorism, because no one wanted this terrible tragedy to happen again. Thus, the League of Nations, which remained inactive throughout the war, was replaced by its successor, the UN, somewhat similar to its predecessor, but based on radically opposite principles. Today, after almost seventy years, we can draw certain conclusions and say whether the UN was more successful than the League of Nations and if successful, why? World War I posed a number of key problems for the victors, which needed to be resolved immediately, such as determining the exact positions of national borders and preventing another devastating war. Following the Paris Peace Conference – the meeting of the Allied victors took place in Paris in 1919 – an international organization was created with the main mission of maintaining world peace. The League of Nations also discussed global issues such as labor conditions, human and drug trafficking, the arms trade, global health, prisoners of war and the protection of minorities in Europe. The Covenant of the League of Nations was initially signed by 44 countries. From September 28, 1934 to February 23, 1935, the Society had a maximum of 58 members. of its existence, was doomed to failure. First, despite the fact that the League of Nations was the brainchild of the 28th American president...... middle of paper...... the world that the UN is not an empty expression of world politics, but the first step towards a peaceful future. To conclude, it can be said that although the League of Nations had similar goals to the United Nations, due to the times, the League's actions focused primarily on the development of Western European countries , ignoring the problems of countries in Africa, Asia and Latin America. Today, it is important that every country gets involved in solving global problems. If a country participates in an organization such as the United Nations, which has gained the credibility of world development leaders by influencing global politics, its opinion could be taken into consideration. This principle, along with the correction of mistakes made during the creation and operation of the League of Nations, allowed the UN to be more successful than its predecessor..