Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A defining moment in American history

Author Garry Wills is unequivocal in his admiration for Abraham Lincoln and his brief speech, which became arguably the most famous oration of American history. In this fascinating book, he places the Gettysburg Address in context, explaining the political philosophy that inspired it, the literary precedents that gave it form, and the social/historical milieu that influenced the individuals who were present. There are many interesting tidbits here, including the culture of death that existed in the 19th century and the way it influenced the evolution of cemeteries, the influence of classical Greek oratory on the structure of the address, and Lincoln's careful attention to the written word.