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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.
Why Did World War II Happen?
In this free resource on World War II, understand the causes of World War II and why these issues drove countries back to battle just two decades after World War I.
How Do Countries Decide Whether to Go to War?
Learn how balances and imbalances of power contributed to World Wars I and II in this historical video.
How Did the United States Become a Global Power?
Learn how domestic expansion and three wars—the Spanish-American War, World War I, and World War II—transformed the United States’ standing in the world.
What Are the Origins of Communism?
Explore the different ways Marx, Lenin, and Stalin interpreted communism and dive into the history of translating an ideology into policy.
Essential Events Between 1900 and 1945
Learn how two world wars and other major historical developments from the Spanish-American War to World War II reshaped global affairs in the first half of the twentieth century.
What Is Fascism?
In this free resource, learn how Benito Mussolini and Adolf Hitler rose to power and the lessons their political journeys hold for today.
How Self-Determination Shaped the Modern World
Learn how the world’s nearly two hundred countries came to be, and whether the map is set in stone.