Is there a reason that the colour purple is associated with royalty?

Question

Was there some kind of real-world instance or happening we can point to that caused purple to become the “royal colour”?

In: 51

Answer 1

The Phoenician city of Tyre had a monopoly on its production as no one else knew the trade secret that it was derived from local snails so European was beholden on traders from the Levant to obtain it