 Jean-Baptiste Debret, a French painter who was active in Brazil in the first decades of the 19th century, started out with painting portraits of members of the Brazilian Imperial family, but soon became concerned with the slavery of both blacks and indigenous inhabitants.His paintings on the subject (two appear on this page) helped bring attention to the subject in both Europe and Brazil itself.The Clapham Sect, a group of evangelical reformers, campaigned during much of the 19th century for Britain to use its influence and power to stop the traffic of slaves to Brazil.