US History

Explore the rich tapestry of American history, from the founding of the nation to contemporary events, examining key figures, events, and movements that shaped the United States.

Advanced Topics

The World Wars and Global Leadership

Entering the World Stage

The U.S. shifted from isolation to involvement in global conflicts in the 20th century. World War I (1914–1918) marked the beginning, but World War II (1939–1945) cemented America’s role as a global leader.

War Efforts at Home

The wars spurred technological advances and social changes, like women joining the workforce and the Great Migration of African Americans to northern cities.

Aftermath and Global Responsibility

Postwar, the U.S. helped create the United Nations and shaped world politics, economics, and culture, leading the fight for democracy and rebuilding efforts in Europe and Asia.

Today’s Relevance

The legacy of the World Wars influences U.S. foreign policy, military alliances, and its ongoing role in global peacekeeping.

Examples

  • D-Day: Allied invasion of Normandy, a turning point in WWII.

  • Marshall Plan: U.S. aid to rebuild Europe after WWII.

In a Nutshell

The World Wars transformed the U.S. into a global superpower.

Key Terms

Superpower
A nation with dominant influence in world affairs.
Isolationism
A policy of remaining apart from the affairs of other countries.