It started around 1977 or 1978 with reggae dub type hip hop
FYI: This is untrue. I notice that a lot of people are trying to take credit for hip hop and its origins. Reggae is not hip hop no matter what type of reggae it is. Reggae is reggae. Dont get me wrong, i love reggae music but it is not hip hop. Hip Hop is Hip Hop. I suggest you research the Last Poets.