War. Even if we examine the history of smaller parts of the conflict, such as the military campaigns or one battle, the resulting History will be only part of that history.

The need to select in order to make history intelligible is not the only reason why History is always being rewritten. For one thing, new sources (more history) frequently become available. The opening up of the papers of well-known persons enables historians to write fuller, more accurate accounts of their lives and of events their lives touched. The spate of new books about such twentieth-century Presidents as Harding and Eisenhower are recent examples of this. New materials are constantly coming to light, even for persons and events in the distant past. An early El Greco painting recently found in Crete undoubtedly will cause that seventeenth-century artist’s life and work to be reevaluated. Archaeological discoveries have repeatedly made us aware of the history of whole civilizations previously unknown.

New ways of evaluating evidence lead to new historical writing. The development of psychoanalysis has caused hundreds of biographies to be written. Most of these are of little worth, but psychoanalytical knowledge has also caused historians to pay more attention than they did in the past to childhood and child rearing, to family life, and to many other subjects, often with valuable results. Statistical techniques such as multivariant analysis, which provides a method for evaluating the relative importance of different factors in determining why voters back one or another candidate or party, have changed a great deal of History. And of course the computer, with its capacity for assimilating and manipulating enormous masses of data, has made it possible to use such sources as census reports in ways that previously would have consumed more time and energy than any historian could muster.

PROBABLY THE main reason why History is rewritten is that new history causes us to ask new questions about the past. In seeking to understand why things are the way they are, we turn to History. When, as is often the case, History does not provide satisfactory answers, we search the history of these things and end by writing new History. In other words we select different facts, facts that provide answers to the new questions we are asking. The postwar civil rights movement sent historians scurrying to the sources and has resulted in a vast outpouring of black History. The modern demands of women for equal treatment have resulted in research on women as workers throughout history, on sexual mores, and on many other topics in addition to women’s rights movements and other obvious issues.

The following article explains how and why the History of the Reconstruction period after the Civil War has evolved—has been revolutionized- over the years. It is the first of a series intended to make readers aware of the latest trends in the writing of American History and to illustrate what Marc Bloch meant when he wrote that

history “is constantly transforming and perfecting itself.”