Answer:
It could be that the feud is so longstanding that the families themselves don't know why it started. The Montagues have always hated the Capulets and vice versa.
Explanation:
Good luck with your assignment! :)
Anecdotes definitions and quotations from experts are all good for an argumentative essay but personal opinions aren’t
Perhaps 'vocabulary'?
It is important to use vocabulary/terminology in a persuasive speech that the audience will understand.