Conversation so far:
Where was Henry Fonda born?
Henry Jaynes Fonda was born in Grand Island, Nebraska.
Who was Henry Fonda's parents?
Henry Jaynes Fonda was the son of printer William Brace Fonda, and his wife, Herberta.
Where did Henry Fonda go to university?
Henry Fonda attended the University of Minnesota.

Question: What did he major in?
Self-contained rewrite: What did Henry Fonda major in at the University of Minnesota?