What was direct result of the September 11 2001 terorist attack on the us?

The direct result of the September 11, 2001 terrorist attacks was a significant shift in U.S. domestic and foreign policy, leading to the initiation of the War on Terror. This included the invasion of Afghanistan to dismantle al-Qaeda and remove the Taliban from power. Additionally, the attacks prompted widespread changes in security measures, including the establishment of the Department of Homeland Security and the implementation of the USA PATRIOT Act. The events also had lasting impacts on global geopolitics and civil liberties discussions in the U.S.