primary sourceA document or object created during the time period being studied, by someone who experienced the events.
secondary sourceA work created later that interprets or analyzes primary sources.
compelling questionA broad, open-ended question about an enduring issue that drives historical inquiry.
supporting questionA narrower, specific question that helps you gather evidence to answer a compelling question.
historical significanceA judgment about why an event, person, or development matters — based on scale, duration, and lasting impact.
contextualizationPlacing a source or event within the time, place, and circumstances in which it was produced.