Skill: Knowledge: History
History is an important knowledge that many seem to forget. It makes up the foundation of many societies, and helps tell tales that go beyond lifetimes.
Mechanically,, History covers almost every Lore subject with a side of Geography and other subjects Lore may not cover (which is saying a lot since the skill is infinite). It also covers, and helps with, the goings on of any particular adventure or campaign, being used with the Recall Action | ◈ for almost anything.
Knowledge: History only uses INT / Intelligence by default. Knowledge: History is a Primary Skill, meaning it is a major skill that can only be gained by mechanics that grant proficiency. Additionally, it is a Knowledge Skill, which means it is a skill that requires a bit of input from the player and the GM to be used effectively, as well as a little bit of intuition on the player's side to use well.