The sentence that shows the most bias is:
“What good man would prefer a country covered with forests and ranged by a few thousand savages to our extensive Republic, studded with cities, towns, and prosperous farms . . . ?”
This statement displays a clear bias against Native Americans, referring to them as "savages" and implying that a civilized society is inherently superior to their way of life. It suggests a dismissive and derogatory view of Indigenous peoples and their lands.