The African Roots of Argentine Tango
Here I found a video about the African roots of Argentine Tango.
Which are the origins of “Argentine” Tango?
So Tango historians have different opinions about the question which where the dances and cultures that originated Argentine Tango, it is csafe to say, that Tango had strong African influences. Many of these however where lost in the course of time, or have been adapted to the music and listening habits of European, mainly white, immigrants and the Argentine upper-class influenced by the latter.
In the video the african influences are described briefly.
By the way, the african influences are still more obvious in the milonga and its rhythm patterns and in the rhythmical Tangos.