World Wars I and II had a significant long-term impact on the global economy. First, after World War I, many countries, especially those involved in the conflict, experienced economic collapse. With much of the infrastructure destroyed, reconstruction costs are a heavy burden. The German economy, for example, suffered from overly heavy war reparations, leading to hyperinflation in the early 1920s. This triggered a global economic crisis known as the Great Depression. After World War II, the world economic situation was no less dramatic. European countries were economically weak and needed massive aid. The Marshall Program launched by the United States was an important step in revitalizing the European economy. By providing financial and material assistance, America played an important role in the recovery of the European economy and created a stable market for US products. Furthermore, the war also triggered major changes in the structure of international trade. Many countries are shifting focus from primary to secondary industries, looking for new ways to increase productivity and efficiency. This transition not only boosted the manufacturing industry but also created new jobs, driving economic growth in many countries. In addition, the emergence of international organizations such as the World Bank and IMF after World War II became an important means of stabilizing the global economy. These two institutions provide financial support and support sustainable economic policies. Their role in promoting free trade helps open global markets, which positively affects the economies of developing countries. War also sparked technological innovation that contributed to economic growth. In World War II, many new technologies were developed, such as radar and jet engines. These innovations not only changed the face of the defense industry but also contributed to the post-war development of the civil sector. The crisis caused by the war made many countries aware of the importance of international collaboration. This led to the establishment of various free trade agreements and economic cooperation to avoid future conflicts. Increasingly close economic ties between countries support global stability and growth. The social impact of war cannot be ignored either. Changes in demographics due to population loss, as well as population movements, affect the labor market. With the emergence of large numbers of refugees, countries have to adjust their budgets and social policy strategies, which in turn affects the economy. From a long-term perspective, the impact of World Wars I and II articulated the deep and complex ways in which countries adapted, innovated, and rebuilt their economies. War is not just about armed conflict; it often serves as a catalyst for important changes in the global economy, creating the foundation for greater growth and stability in the future.