Answer:
The September 11, 2001 terrorist attacks had a significant impact on American domestic and international policies. The United States created new institutions, including the Department of Homeland Security, Directorate of National Intelligence, and National Counterterrorism Center, to prevent future terrorist attacks. The attacks launched two major wars in Afghanistan and Iraq and set in motion sweeping changes to U.S. intelligence and counterterrorism practices.The National Security Strategy of the United States emphasized the importance of bringing democracy, development, free markets, and free trade to every corner of the world, with a focus on weak states like Afghanistan. The attacks also led to increased security measures at airports, government buildings, and other public places. Americans will never forget the coordinated terrorist attacks on September 11, 2001, against the country's financial center in New York, its global military headquarters at the Pentagon, and its civilian air transportation system