History's checks are based on the Intelligence ability score.
You have picked up knowledge related to the history of a region and beyond, including the chronological record of significant events and an explanation of their causes. This includes information pertaining to royalty and other leaders, wars, legends, significant personalities, laws, customs, traditions, and memorable events.
If you have selected this skill as a trained skill, your knowledge represents academic study, either formalized or as a hobby, and you have a better chance of knowing esoteric information in this field.
Make a History check to remember a useful bit of historical knowledge or to recognize a historical clue. See “Knowledge Checks”.