books.google.com.ph - During the three decades between 1890 and 1920, the United States entered the modern era and considered how to meet its new realities-its diverse urban industrial society and its enlarged world power. On many measures, events that occurred in the Progressive Era mark a watershed in American historical...http://books.google.com.ph/books/about/The_Progressive_Era.html?id=6yLQ2NsC9wIC&utm_source=gb-gplus-shareThe Progressive Era
