What is the theme in Undaunted Courage by Stephen Ambrose?

Ethnicity and Racism is another theme. Undaunted Courage provides important insight into the prevailing feeling of superiority that most nineteenth-century white Americans felt over nonwhites. Despite these sentiments, politicians like Jefferson hoped to bring American Indians into mainstream society. Jefferson's reasoning was not completely altruistic, however. He knew that whites would push west into American Indian lands; his only options, as he saw them, were to "civilize" Indians or to remove them to reservations. Jefferson's American Indian policy relied on eventual Indian assimilation into white society. He believed that Indians could be transformed into responsible American citizens. They would renounce their lifestyle and instead become farmers or traders.