Where the provided translation is:
“It seemed that they were arguing about which power was stronger.”
What does the 「かで」in「強いかで」do? Is it a separate で particle preceded by a か？ Is it its own particle? I can’t seem to find its role, or the definition of the entire「強いかで」 anywhere. Thanks!
Edit: Thank you both for taking the time to explain this to me, I never would have considered thinking of か as ending a clause and then interpreting で in that fashion.