The Mediterranean civilization and the further Enlightenment was due to sharing knowledge and goods back and forth, not by keeping the countries and tribes isolated.
Rock music it's a mix between Black and White cultures, creating something else, but better. In Spain we had groups like Triana in the 70's who mixed American Folk and Rock like Jethro Tull (the first two albums are almost a Jethro Tull wannabe, really good) with some Flamenco music. And Flamenco itself it's a mix of Arabic, Gypsy and -who knows- more roots...
Rock music it's a mix between Black and White cultures, creating something else, but better. In Spain we had groups like Triana in the 70's who mixed American Folk and Rock like Jethro Tull (the first two albums are almost a Jethro Tull wannabe, really good) with some Flamenco music. And Flamenco itself it's a mix of Arabic, Gypsy and -who knows- more roots...