Undoubtedly, crises have continued as a concrete fact throughout human history. Many crises experienced both naturally and artificially throughout history have deeply affected human beings and caused serious damage to humanity. However, the World Economic Crisis of 1929 was recorded as the biggest economic crisis of humanity in known history. It is an indisputable fact that events in economic life affect political life. Indeed, world politics has always been shaped around economic relations and systems. The impact of economics on the shaping of policies, states, social transformations, geographies, histories, constitutions and even religions is immeasurable. In this context, the changes in state systems and international relations as a result of the 1929 World Economic Crisis were examined in terms of the effects of the crisis in this study. As a result of the research, it was determined that states became increasingly authoritarian with the statist policies adopted in the world after the 1929 crisis and this caused the Second World War. Also, Turkey which could not fully integrate into the capitalist system, its developments being in parallel with the world in order to keep up with the world are also discussed. As a matter of fact, one of the main conclusions to be drawn from the research is that economics and politics should always be handled as a whole. Keywords: 1929 Crisis, statism, authoritarian, capitalism, socialism