Slave Labor in Rio de Janeiro, BrazilThis lithograph by French traveler Jean-Baptiste Debret shows different facets of urban slavery in Rio de Janeiro. In the foreground slaves lay paving stones in a plaza, while behind them other slaves peddle food. A funeral procession passes in the background. (from Voyage Pittoresque et Historique au Bresil, 1824 color lithograph by Jean-Baptiste Debret [1768–1848] published in 1839/Bibliotheque Nationale, Paris, France/Archives Charmet/The Bridgeman Art Library)