Most ethnomusicologists agree that the roots of rumba can be found in the "solares" of Havana and Matanzas during the 1880s. The "solares", also known as "cuarterías", were large houses in the poor dock neighborhoods of Havana and Matanzas. Many of the important figures in the history of rumba, from Malanga to Mongo Santamaría were raised in "solares". Slavery was abolished in 1886 in Cuba and first-generation of free black citizens were often called "negros de nación", a term commonly found in the lyrics of rumba songs.