title: Salsa (dance)
context: Salsa is a popular form of social dance originating from Cuban folk dances. The movements of Salsa are a combination of Afro-Cuban dance, Son, cha-cha-cha, mambo  and other dance forms. The dance, along with salsa music,[1][2][3] saw major development in the mid-1970s in New York.[4] Different regions of Latin America and the United States have distinct salsa styles of their own, such as Cuban, Puerto Rican, Cali Colombia,  L.A. and New York styles. Salsa dance socials are commonly held in night clubs, bars, ballrooms, restaurants, and outside, especially when part of an outdoor festival.
question: When was Salsa popularized in the US?
answers.text: 1970s