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How a Single Phrase Defined the War on Terror
What is the 2001 AUMF and what does it have to do with 9/11? From the invasion of Afghanistan, to the Iraq War, and more, learn how the United States justified U.S. counterterrorism policy for over two decades.

The History of Terrorism and U.S. Counterterrorism Since 1945
From the creation of the CIA to the “War on Terror,” learn about the evolution of U.S. counterterrorism policies in this terrorism timeline.

History of U.S. Immigration Policy
Explore how the United States has responded to migrants throughout history—from the Chinese Exclusion Act to DACA—and how immigration policy influences the society, economy, and politics of a country.

The Origins of the Internet
The internet evolved from a niche government tool to a nearly universal platform for communications and entertainment.

The Internet by the Numbers
In a world where internet access is increasing, digital divides remain.

Should the Internet Respect National Borders?
The United States supports internet freedom. China, a proponent of cyber sovereignty, disagrees.

How Companies and Governments Do (and Don’t) Protect Your Data
The spread of the internet has far outpaced domestic and international privacy laws, making global coordination difficult and leaving personal data vulnerable.

How Does Cyberspace Work?
Learn about the many places information is transferred across the internet—including under the ocean, up in space, and in your pocket.

What are Cyberspace and Cybersecurity?
Explore the origins of the internet and the challenges that will define its future.

The Growing Threat of Cyberattacks
The Stuxnet worm is only the beginning.