You do know that pro sports (including boxing) were banned in the Communist / Socialist Bloc countries at that time?
Best countries? Pretty much as today I think (excluding the above mentioned EE / Soviet states and Cuba). US and Mexico at the forefront.
Thanks a lot for the answer
Can you please mention 5 to 10 countries that were among the best in professional boxing seventies?
Because I am writing a novel about an international professional boxer in that era
I am in need for the answer
They are trying, you know. They either just don't have the natural talent to become one or they started trying to become one too late in their careers so it never worked out for them.
Thanks a lot for the answer