Who Built America? Is an excellent look at US history in the 20th century from the foundation up. The authors provide relevant and insightful information about immigration, the working class, unions, and the political and military events that shaped our country. The events are thoroughly discussed in terms of cause and effect, and followed through with anecdotal side bars and highilights. Because the text follows a contextual historical line, the information is readily understood and retained. Who Built America? was used as the assigned text in a US History class I took. While I read it willingly as assigned in the class, it is a book I have returned to on numerous occasions since. I highly recommend Who Built America? for everyone and anyone who would like to know not just who was elected when, and what wars were fought with whom, but why and how it effects every one of us.