Period 7

This course is a part of AP®︎ US History, a 11-course Topic series from Khan Academy.

At the end of the 19th century, the industrial might of the United States propelled it into great power status. In the early 20th century, the United States grappled with its new role in the world and the effects of the second Industrial Revolution at home.

This course contains 15 segments:

Contextualizing Period 7

Imperialism: debates

At the turn of the twentieth century, the United States emerged as a world power and an empire.

The Spanish-American War

The Progressives

World War I: military and diplomacy

The United States entered World War I in 1917, fighting on the side of the Allies. Although the US contribution to the war was small relative to the European powers, the war would go on to affect American life into the 1930s.

World War I: home front

1920s: innovations in communication and technology

1920s: cultural and political controversies

The 1920s were both a "roaring" and a turbulent decade for the United States. A thriving interest in all things modern--technology, jazz, social mores--clashed with a cultural backlash against growing multiculturalism and changing values.

The Great Depression

In 1929, the US stock market crashed, leading to a worldwide economic depression that persisted throughout the 1930s. In the United States, President Franklin D. Roosevelt attempted to fight the Depression with a series of relief and recovery measures known as the New Deal.

The New Deal

Interwar foreign policy

World War II: mobilization

World War II: military

From Pearl Harbor to V-J Day, World War II transformed American life.

Postwar diplomacy

Comparison in Period 7