My rating: 4 of 5 stars
This aptly named book concisely and clearly introduces the reader to the pivotal decades of American history, that point in its history in which the United States finally made the transition towards being a world power which would so dominate the subsequent history of the world. Cooper largely follows the biographies of the two men who most dominated the era, Theodore Roosevelt and Woodrow Wilson, in his narrative of the history. This is an understandable technique given both that importance of these two men to this period in history and the Cooper’s prior work as the author of a dual biography on the two. In addition to the well laid out narrative and insightful analysis, Cooper also offers a number of excellent suggestions for further reading on all of the greatest subjects and people of the era at the close of the book. I recommend this book for anyone interested in reading about the great forces that led to the formation of modern America and set the tone for the twentieth century.