Salsa dancing originated in New York in the mid-1970s. It evolved from earlier dance forms such as Son, Son Montuno, Cuban Cha cha cha and Cuban Mambo which were popular in Cuba and other parts of Latin America at the time. Salsa, like most music genres has gone through a lot of changes through the years and incorporated elements of Swing dancingand Hustle, as well as elements of Afro-Cuban and Afro-Caribbean dances such as Guaguanco and Pachanga. There are different styles of Salsa, Salsa Romántica is a soft form of salsa music that emerged between the mid-1980s and early 1990s in New York City and Puerto Rico.

Source: Wikipedia