What were the effects of the September 11 attacks on the World Trade Center and the Pentagon?

The September 11, 2001, attacks on the World Trade Center and the Pentagon had profound and lasting effects on American society, governance, and public health.

Domestic Policy and Security

In the immediate aftermath, the U.S. government prioritized national security, leading to significant structural and legislative changes:
* Department of Homeland Security: A new cabinet-level department was established to coordinate domestic responses to terrorism.12
* USA PATRIOT Act: Congress passed this legislation to expand the surveillance and search powers of federal law-enforcement and intelligence agencies, including the FBI and NSA.123
* Surveillance: The government increased its focus on monitoring communications, including the authorization of programs to track international calls and emails.42
* Security Measures: Enhanced security protocols were implemented at airports, borders, and public events.4

Public Health and Long-term Impact

The physical destruction of the World Trade Center had severe health consequences for those in the vicinity:
* Toxic Exposure: The collapse of the Twin Towers blanketed Lower Manhattan in toxic dust, and fires at Ground Zero burned for months.1
* Health Issues: Hundreds of thousands of people were exposed to harmful substances. Long-term health monitoring programs have identified high rates of chronic sinusitis, GERD, various cancers, and PTSD among first responders and residents.1
* Loss of Life: By 2023, the number of deaths linked to 9/11-related illnesses was estimated to have surpassed the number of lives lost during the attacks themselves.1

Foreign Policy

The attacks prompted the declaration of a global "war on terrorism," resulting in lengthy military engagements in Afghanistan and Iraq, which fundamentally reshaped U.S. foreign relations and international security policy.14