In "Undaunted Courage," Stephen E. Ambrose uses New Historicism. What is New Historicism?

New
Historicism refers to a form of literary criticism that emerged during the 1980s and made
popular in the 1990s by authors such as Stephen Greenblatt.  Whereas older forms of literary
criticism focused its attention on how a literary work reflected the time in which it was
produced, New Historicism also considers the perspective of the work's author.  It assumes the
author's social, political, and economic background all contribute to his/her perspective. 
In...