Introduction to United States History: Reconstruction to the Present (saylor.org)

This course will introduce you to United States history from the end of the Civil War in 1865 through the first decade of the twenty-first century. You will learn about the major political, economic, and social changes that took place in America during this nearly 150-year period. The course will be structured chronologically, with each unit focusing on a significant historical subject. The units will include representative primary-source documents that illustrate important overarching political, economic, and social themes, such as the growth and expansion of political representation and civil rights in America, industrial development and economic change, race and ethnicity in American society, and cultural change over time. These primary documents offer you insights into the thinking of people who directly witnessed and experienced these historical developments. By the end of the course, you will understand how the United States grew from a relatively weak and divided agricultural nation into a cohesive military and industrial superpower by the beginning of the twenty-first century.