Modern World War refers to large-scale conflicts involving many countries, including World Wars I and II, as well as more contemporary conflicts. Its impact on global geopolitics is very significant and complex, creating major changes in the world order. One of the most striking impacts of the Modern World War was the emergence of new great powers. After World War II, the United States and the Soviet Union emerged as the dominant powers. This rise led to the formation of a bipolar system, in which the two countries competed in various fields, from military to technology. This rivalry also gave rise to the Cold War, which created significant geopolitical tensions. Second, the World Wars brought drastic changes in international alliances. International organizations such as the UN were founded to encourage diplomacy and peaceful resolution of conflicts. The emergence of economic blocs, such as the European Union, is also an impact of war that strengthens cooperation between countries. This shows the need for international collaboration to prevent similar conflicts in the future. Then, a shift in power from west to east began to appear. China, as a growing economic power, has become the center of attention. China’s rise in the global geopolitical context is changing power dynamics and military strategy maps. The Belt and Road Initiative shows China’s ambition to expand its influence globally, challenging US dominance. The Modern World Wars also changed countries’ approaches to security. International terrorism, as a result of conflict, has become a major issue in many countries. Countries in various parts of the world must face new threats that are not bound by geographic boundaries. This leads to a more collaborative transformation of security and intelligence strategies. Furthermore, the social impact of the World Wars on the population cannot be ignored either. The war brought mass migration, refugees, and humanitarian crises. Communities affected by war face enormous challenges to rebuild their lives, contributing to social tensions in refugee-hosting countries. In addition, climate change caused by human activities is increasingly recognized as a new geopolitical challenge. Conflicts due to natural resources and climate change are starting to cause riots in various regions. Therefore, international cooperation on environmental issues is very important for global stability. Global economic conditions have also been affected by the World Wars, with the emergence of an interconnected global economy. The role of organizations such as the IMF and World Bank is crucial in managing economic stability and providing assistance to countries affected by conflict. In the midst of all this, the role of technology is accelerating. The development of sophisticated weapons, as well as the use of social media to influence public opinion, opens up a new paradigm in conflict and diplomacy. Countries are now paying more attention to cybersecurity and information warfare, as part of navigating modern politics. Overall, the impact of the Modern World War on global geopolitics brought about many changes. From the rise of new powers to new challenges in security and the economy, all of these elements are creating challenges and opportunities for countries around the world, redefining relations between countries and driving shifts in international interactions.