Turning Points that Changed American History

Edward O’Donnell / College of the Holy Cross

In the relatively short history of the United States, there have been many turning points and landmark movements that irrevocably altered the direction of the nation and signaled the dramatic start of a new historical reality. Some took the form of groundbreaking political and philosophical concepts; some were dramatic military victories and defeats. Still others were nationwide social and religious movements, or technological and scientific innovations.

What all of these turning points had in common, is that they forever changed the character of America. Sometimes the changes brought about by these events were obvious; sometimes they were more subtle. Sometimes the effects of these turning points were immediate; other times, their aftershocks reverberated for decades.

Edward O’Donnell

College of the Holy Cross

Edward O’Donnell is a professor of history at College of the Holy Cross. He is the author of several books, including Henry George and the Crisis of Inequality: Progress and Poverty in the Gilded Age. He frequently contributes op-eds to publications like Newsweek and The Huffington Post, and has been featured on PBS, the History Channel, the Discovery Channel, and C-SPAN. O’Donnell also has curated several major museum exhibits on American history and appeared in several historical documentaries. He currently hosts a history podcast, “In the Past Lane.”

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