Quite true, but it's worth noting that Longshanks did not succeed in unifying Scotland with England. (He did conquer Wales before he invaded Scotland, which was

Quite true, but it's worth noting that Longshanks did not succeed in unifying Scotland with England. (He did conquer Wales before he invaded Scotland, which was certainly a significant unification.) What eventually unified Scotland with England was dynastic turnover (James VI of Scotland succeeding Elizabeth I to the throne of England), not war. (Although the unification did end up being enforced by war in the 1700s.)