"This book", writes historian Walter Licht in the Introduction, "is concerned with the great social and economic transformation that occurred in this country over the course of the 19th century between the ages of Jefferson and McKinley When and where change occurred and the pace of change will be of prime importance, but the great одент issue will be the 'why' of change What caused America to be so fundamentally transformed?".  Издание 1954ISBN 0801850142.