Definition: Mulattoism is a concept in African American history that describes individuals who are of mixed race heritage, often due to slavery or mistreatment. It was coined by the historian and writer Frederick Douglass, who wrote about his experiences as an enslaved man during the 19th century. The term "mulatto" refers to someone whose ancestors were both Africans and white. The concept originated in the 1870s when African Americans began to adopt more racial names with a mixed surname,