Slavery, another common practice among European entrepreneurs and governments until the 19th century, was also based on the belief that slaves belonged to "inferior races". Nowadays, racists put emphasis on cultural differences rather than on biological inferiority. ###>Or, il a été établi, que le concept de "race" était une concept fabriqué par la société, et que l'on ne pouvait parler des peuples que sur la base de la notion d' "être humain".