In Louisiana especially, Creoles of color had long comprised a third class during the years of slavery. They had achieved a high level of literacy and sophistication under the French and Spanish rule, becoming educated, taking the names of white fathers or lovers, and often receiving property from the white men involved with their families. Many became artisans, property owners, and sometimes slaveholders themselves. Unlike in the Upper South, where free African Americans varied widely in appearance, free people of color in New Orleans and the Deep South tended to be light-skinned due to generations of intermarriage with people of European ancestry. After the United States negotiated the Louisiana Purchase, more Americans settled in New Orleans, bringing with them their binary approach to society, in which each person was classified only as black or white. They began to curtail the privileges of Creoles of color.