It’s been popular since the 80s. Reached across the world in the early-mid 90s, broke into the global mainstream at the turn of the millennium. It ushered in entertainment media presenting rappers as a-list music celebrities, Eminem being a significant early figure in this, along with Snoop and Puffy. It has since had strong creative influence in fields of film, literature, art, fashion, dance, poetry. Now it’s the dominant music genre worldwide.