Complex sentence: Acosta returned to Puerto Rico and in 1980 she became interested in genealogy and on April 29,1989 became one of the founding members of the Sociedad Puertorriqueña de Genealogía (Puerto Rican Genealogical Society).
Split into simpler sentences: Acosta returned to Puerto Rico and in 1980 she became interested in genealogy. On April 29,1989 she became one of the founding members of the Sociedad Puertorriqueña de Genealogía (Puerto Rican Genealogical Society).