Were both American composer Scott joplin and Puerto Rican composer juan morel campos ever together at the 1893 Chicago world's fair?

No, Scott Joplin and Juan Morel Campos were not together at the 1893 Chicago World's Fair. Joplin, known for his ragtime music, was present at the fair, where he gained recognition. However, Juan Morel Campos, a prominent Puerto Rican composer, did not attend the fair, as he was primarily active in Puerto Rico during that time.