Which group is generally held responsible for the terror attacks of September 11, 2001?

The terror attacks of September 11, 2001, are generally attributed to the militant Islamist group known as al-Qaeda.

The group responsible for the terror attacks of September 11, 2001, is al-Qaeda. Here are the steps to understand this:

1. Al-Qaeda is an extremist Islamic group founded in the late 1980s by Osama bin Laden and other militants.
2. On September 11, 2001, 19 individuals affiliated with al-Qaeda hijacked four commercial airliners.
3. They crashed two of the planes into the Twin Towers of the World Trade Center in New York City.
4. Another plane was flown into the Pentagon in Arlington, Virginia.
5. The fourth plane, United Airlines Flight 93, crashed into a field in Pennsylvania after passengers attempted to regain control and thwart the hijackers' plans.
6. These attacks resulted in the deaths of nearly 3,000 people and caused significant damage to the targeted buildings.
7. The motivation behind these attacks was to undermine the United States' political and economic influence, as al-Qaeda believed the US was a threat to their cause.

In summary, al-Qaeda is the group generally held responsible for the terror attacks of September 11, 2001.