The study resource from Khan Academy provides an overview of Period 7: 1890-1945 in American History. The Nineteenth Amendment is discussed in this lesson. This resource is designed as a review for the AP US History Test.

The study resource from Khan Academy provides an overview of Period 6: 1865-1898 in American History. Social Darwinism, Charles Darwin, and the Gilded Ages are discussed in this lesson. This resource is designed as a review for the AP US...

The study resource from Khan Academy provides an overview of Period 7: 1890-1945 in American History. The Spanish-American War is discussed in this lesson. This resource is designed as a review for the AP US History Test.

The study resource from Khan Academy provides an overview of Period 6: 1865-1898 in American History. The Populist political party was discussed in this lesson. This resource is designed as a review for the AP US History Test.

The study resource from Khan Academy provides an overview of Period 6: 1865-1898 in American History. The development of the middle class is discussed in this lesson. This resource is designed as a review for the AP US History Test.

The study resource from Khan Academy provides a video lesson over Period 7: 1890-1945 in American History. This self-assessment covers context for The Spanish-American War and the debate about imperialism. This resource is designed as a...

The study resource from Khan Academy provides an overview of Period 6: 1865-1898 in American History. The politics in the Gilded Age is discussed in this lesson. This resource is designed as a review for the AP US History Test.

AP U.S. History unit covers the late 19th and early 20th Centuries, including the first World War and the Progressive Era. Comprehensive lesson materials and interactive media.

In the mid-nineteenth century, newspaper editor John O'Sullivan coined the term 'manifest destiny' to describe the belief that God intended for the United States to occupy North America from Atlantic to Pacific.