Conversation so far:
What was Hugh Trevor-Roper's interest or views of the English Civil War?
In Hugh Trevor-Roper's opinion, the dispute between the Puritans and the Arminians was a major, although not the sole, cause of the English Civil War.

Question: What else did he think of the war?
Self-contained rewrite: What else did Hugh Trevor-Roper think of the English Civil war?