This article provides an overview of the legacy of the 9/11 attacks and their continued relevance in contemporary society. It begins with a brief explanation of the events and significance of 9/11, highlighting its impact on U.S. foreign and domestic policies. The article then discusses how the attacks have shaped national security measures, including increased surveillance and government intervention, while also impacting civil liberties and individual rights. Additionally, it explores the effects of 9/11 on international relations, cultural and societal norms, as well as emergency preparedness and response. Throughout the article, various examples and recommendations are provided to further understand the ongoing influence of 9/11.