What is bias in historical sources?

• A. A balanced view
• B. An objective report
• C. A one-sided perspective
• D. A neutral summary

Answer: (C)

Bias in historical sources means the writer’s own opinions, beliefs, or interests shape what they include, emphasize, or omit, resulting in a one-sided perspective. In history, this can show up when a source aims to persuade a particular audience or defend a certain point of view, so it highlights some facts while downplaying or ignoring others.

Think about how language can reveal bias: loaded or emotional words, terms that praise or condemn, or a focus on events that support a specific stance. Bias can also show up through selective evidence—sharing enough to seem credible but leaving out important counterpoints—or through the author’s purpose, background, or loyalties.

This is why the best way to understand a source is to read it critically, noticing what it includes and what it leaves out, and compare it with other sources from different perspectives. A source that presents only one side and strongly favors a viewpoint is demonstrating bias, not objectivity, balance, or neutral summarization.