Historic vs. Historical: What's the difference? | Merriam-Webster
https://www.merriam-webster.com/grammar/everything-youve-ever-wanted-to-know-about-historic-and-historical
webHistorical is used as the general term for describing history, such as 'the historical record,' while historic is now usually reserved for important and famous moments in history, such as 'a historic battle.' If you're worried about whether you should use a or an before either word, they both are fine, but a is more common. 'A' vs. 'An'
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