September 11th: How Did It Change Your Life? - HISTORY

Fifteen years later, volunteers from the 9/11 Tribute Center describe how the events of September 11, 2001 changed their lives.

FACT CHECK: We strive for accuracy and fairness. But if you see something that doesn't look right, click here to contact us! HISTORY reviews and updates its content regularly to ensure it is complete and accurate.

RELATED CONTENT

Volunteers from the 9/11 Tribute Center reflect on the importance of sharing their stories of 9/11 with future generations.

How has the United States changed in the fifteen years since September 11, 2001? How will it continue to grow?

Notable New Yorkers including former mayors Rudy Giuliani and Michael Bloomberg and newsman Dan Rather remember where they were on September 11th.

Learn about the origins of ISIS and its leader Abu Musab al-Zarqawi, who terrorized Iraq's Shia Muslims with suicide bombers. Discover how successor Abu Bakr al-Baghdadi used social media to spread international terrorism before the group weakened.

In the wake of the worst financial crisis since the Depression, ABC News reports on September 14, 2008, on the impending collapse of the giant investment bank Lehman Brothers. Alan Greenspan, former chairman of the Federal Reserve, provides further analysis.

A brief explanation of why the towers collapsed on 9/11.