In 1970, she won the Festival de la Canción in Ibagué, Colombia, with the songs "Hermano tengo frío", composed by Karmen Mercado, the niece of actor and astrologer Walter Mercado, and "Pongo el Mundo en las Manos de un Niño" composed by Raoul Gonzalez.
In 1972, she went to Tokyo, Japan, where she sang "La Borinqueña" before the world heavyweight boxing championship fight between George Foreman and José Roman.
Ring En Español remarked that her singing of the Puerto Rican national anthem probably lasted longer than the fight itself.
That same year, she made an appearance on Sesame Street with fellow Puerto Rican entertainers Raúl Juliá and Sonia Manzano.
In 1973, she won one of the first awards in the Festival de Benidorm in Valencia, Spain, with the song "Vete Ya", composed by Julio Iglesias for her.
The best cuts are "Un Pueblo Es", "A Quien Vas Enganar", "Precisamente Tu", "Oye Guitara Mia"and "Sugar Me".
Besides Puerto Rico, Caro's relevance as a cultural icon is strongest in Chile, a country in which she has performed regularly since her 1974 appearance at the Viña del Mar International Song Festival.
It features musical themes such as the song "Buscando Mis Amores", from the poems of Saint Teresa of Jesus, Luis de León and John of the Cross.