If I had to take a guess I believe he means that he is a very smart intelligent history teacher. He is familiar to the topic of history and knows enough to be a teacher, and a very good one at that. I hope this answer helped and I'm sorry if it didn't.
When the guide calls Colin a "brilliant history scholar," he means a British student with vast knowledge of the Magna Carta.
Explanation:
In "Magna Carta Meltdown" by Mary Clare Gordon, the guide uses "brilliant history scholar" as a figure of speech to describe Colin and his explanation of British history, all while also referring to the role of the British people in gaining their freedom.
It demonstrates that Nora is considering leaving her children.
The text states: Nora: Do you think they would forget their mother if she went away altogether? This implies that Nora is thinking about a scenario where she leaves her children behind. Hope I helped!
