The conga line is a dance that was derived from the Cuban carnival dance of the same name & became popular in the U.S. in the 30-50’s. Dancers form a long processing line, which would usually turn into a circle. It has three shuffle steps on the beat, followed by a kick that is slightly ahead of the fourth beat. The conga, a term sometimes mistakenly believed to be derived from the African region of Congo, is both a lyrical & danceable genre, rooted in the music of carnival. Wikipedia