The events of September 11, 2001 had many political, social, and economic impacts on the United States. I will discuss a few significant ones in this response, but please note that this is not a comprehensive list.
On September 11, 2001 a terrorist group called al-Qaeda hijacked four commercial airplanes in the United States. The terrorists deliberately crashed two planes into the World Trade Center in New York City. They crashed another plane into the Pentagon in Arlington, Virginia. Passengers on the fourth plane managed to crash the plane into an empty field in western Pennsylvania. Overall, 2,9811 people died because of these attacks.
The attacks on 9/11 had wide-reaching political implications. The United States government and governments around the world were outraged about this violence. After the attacks, the United States invaded Afghanistan and later invaded Iraq. This has had a significant impact on the United States’ relations with other countries, especially many predominantly Muslim countries that do not support what the United States government did.
The attacks also revealed huge problems with global security. Before 9/11, security at airports was pretty relaxed, and people could go up to the gate of a flight even if they were not flying. Since 9/11, the Transportation Security Administration (TSA) has been cracking down on airport security, and there has been an increasing rise in advanced technologies to screen people at airports and keep everyone there safe.
The destruction of the towers also caused major problems for the economy. New York City was already dealing with a financial downturn in 2001 and the attacks caused an additional 143,000 jobs to be lost per month in a three-month period. Many people were also scared of public transportation for a long time. The transportation and tourism industry were hit hard financially, and stocks in related companies drastically fell.
The attacks also had complex social impacts on the twenty-first century. One of the most significant social impacts was the stark rise in Islamophobia and anti-Arab sentiment. Al-Qaeda was based in Afghanistan, a predominately Muslim country. After the attacks, many people around the world, from politicians to average civilians, began to argue that Al-Qaeda was proof that Muslims are bad. People with Arab and other minority identities reported feeling more surveilled in airports after 9/11 and subject to more verbal harassment and microaggressions in general. It is important to note that this discrimination is completely unjustified. People were (and still in many places are) channeling their anger over 9/11 and fears of terrorism into racist practices. Those who point to 9/11 to justify false ideologies of white supremacy and criminalize people of color are not basing their views on actual facts.