Updated: April 18, 2013
For hundreds of years, people with conflicting -- and often radical -- ideologies have turned to committing acts of terrorism.In the United States, the attacks that took place on September 11th, 2001 remain the most infamous acts of terrorism in this country, not only because of the destruction and deaths that they caused, but also the ongoing ramifications in our foreign policy and security procedures since.
Osama bin Laden was the head of the terrorist organization al-Qaida which is responsible for the attacks. The United States was engaged in an effort to capture or kill him until last May, when an elite crew of American soldiers succeeded in killing him during a firefight in a compound where he was hiding outside of Islamabad, Pakistan. Even without Bin Laden, however, al-Qaida continues to exist and law enforcement and military forces are engaged in monitoring their activities and working to prevent future attacks.
Take the quiz to find out how terrorism came to exist and how it has changed the world, and watch videos to learn more about the latest developments in the battle against it.
Video: Double Agent Bomb Plot
Officials say a double agent working for the CIA foiled bombing attempt.
Interactive: Osama bin Laden Dead
A U.S. strike killed the terrorist head. Learn more about what happened here.
Video: Interrogation Techniques
A look at whether enhanced interrogations techniques helped find Bin Laden.
Video: Teen Makes 9/11 Documentary
Shelby Holliday talk to a teen who went to school a few blocks from the twin towers on 9/11.
Video: The Phone Call that led to Bin Laden
Justin Finch traces the intelligence work that helped the U.S. track down the terrorist.
Video: Teens React to Osama Bin Laden's Death
What people think about the death of the world's most wanted terrorist.
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