Identify a widely held example of cultural bias, stereotyping, and/or prejudice in nineteenth century America. Explain how it affected the population as a whole socially, politically, and economically.

yes they have. but is this a true false question? if it is, the answer is true.

it was bribing i think i might be wrong though

i believe it would influence their own way of understanding things. it shall be a foundation where they can draw or start an argument.   historians are also  scientists that  have their tools of analysis and expertise to unlock a variety of difficulties such as relationships of man, origin, politics, economy, and culture. based on facts and understanding on these areas, they may shade light to extract ideas and develop options to validate a hypothesis or debunk it.