The Modern World War had a deep and broad impact on the global political, economic and social map. This conflict not only resulted in financial and physical losses, but also transformed international relations. One of the most significant consequences is the emergence of a multipolar world order. Countries such as China and India are increasingly showing dominance, displacing traditional powers from the West led by the United States. Changes in the geopolitical climate due to the Modern World War also resulted in increased regional tensions. The crisis in the Middle East, often linked to the impact of foreign invasions and interventions, has resulted in a vicious cycle of conflict that is difficult to end. Countries around conflict locations become vulnerable to terrorism and radicalization, worsening the global security situation. From an economic perspective, the Modern World War accelerated the transformation of the global financial system. Developing countries gain greater access to international markets, but also face challenges in terms of economic instability. Dependence on natural resources and fluctuations in commodity prices often trigger local economic crises that have global impacts. The technology sector is also experiencing significant evolution. Conflict paves the way for defense and cyber innovation, making countries pay more attention to cyber security as a priority. These tensions often give rise to a digital arms race, in which countries compete to develop their cyber capabilities to protect critical infrastructure. On the social side, waves of migration resulting from conflict create new challenges for host countries. Refugees often face discrimination and unfair treatment, which leads to social fragmentation. This exacerbates xenophobia and increases inter-ethnic tensions within host societies. The Modern World Wars also inspired changes in international law. Many countries are reevaluating treaties and conventions amid the increasing threat of global terrorism. Humanitarian intervention has become a major topic, with cases of violating state sovereignty for humanitarian purposes increasingly frequently debated. The environmental impact of the Modern World War cannot be ignored. Conflict often destroys local ecosystems, resulting in long-term environmental damage. Limited natural resources pose an obstacle to post-conflict reconstruction, causing further tensions between the countries concerned. With the increasing complexity of global problems, international collaboration has become increasingly important. International organizations such as the UN serve as platforms for dialogue, although they often have difficulty reaching consensus. Building cooperation between countries with conflicting interests is a major challenge in the era after the Modern World War. One aspect that is no less important is how social media and digital information influence conflict narratives. The rapid dissemination of information impacts public opinion and often triggers protests or support for certain parties in the conflict. This phenomenon makes the involvement of civil society in the peace process even more significant. Finally, the Modern World Wars broadened our understanding of security. Security is no longer limited to military factors but also includes economic, environmental and communal security. This new paradigm encourages countries to not only prepare themselves to face physical threats but also non-traditional challenges that continue to develop.