A historical source is <u>biased</u> when it can be deemed unreliable because the author appears to unfairly favor a particular side or viewpoint.
<h3>What is bias?</h3>
Bias refers to a historian's perspective being strongly for or against an issue.
Historical bias refers to when the information in the source can be clearly described as <u>unfair, unbalanced, or prejudiced</u>.
Thus, a historical source is <u>biased</u> when it can be deemed unreliable because the author appears to unfairly favor a particular side or viewpoint.