US History 1900s to Present

The United States of America has a rich and complex history, particularly in the 20th century and beyond. In this lesson, we will explore the basic concepts of US History from 1900 to the present, including key events, people, and movements.


The 20th century saw the United States emerge as a global superpower, with its economy, military, and cultural influence extending around the world. A few of the most significant events and periods of US history during this time include:

World War I and II – The United States played a pivotal role in both World War I and II, which had far-reaching impacts on the nation’s economy, politics, and society.

Civil Rights Movement – The struggle for racial equality and civil rights was a major theme of the 20th century, with landmark events such as the Montgomery Bus Boycott, the March on Washington, and the Civil Rights Act of 1964.

Cold War – The United States and the Soviet Union engaged in a tense global rivalry known as the Cold War, which lasted from the late 1940s to the early 1990s and had significant political, economic, and cultural implications.

Post-9/11 Era – The terrorist attacks of September 11, 2001, and the subsequent War on Terror have shaped the political and social landscape of the United States and the world in the 21st century.


The United States has had a profound impact on the world, with its economy, politics, culture, and military shaping global affairs in significant ways.

Technology – The United States has been at the forefront of technological innovation in fields such as computing, aerospace, and biotechnology, among others.

Popular Culture – American popular culture, including music, movies, television, and fashion, has had a significant influence on global culture.

Civil Rights – The Civil Rights Movement of the 20th century paved the way for greater equality and justice in the United States and beyond, inspiring similar movements around the world.

United States Government