Final answer:
The question pertains to the typology of black ghettos in the USA, developed by geographers to study the evolution and patterns of ghettoization, providing understanding of racial discrimination and relations.
Step-by-step explanation:
The question refers to a typology developed by geographers Larry Ford and Ernst Griffin, which maps out the evolution of black ghettos in the United States. This typology provides insight into the methods of discrimination and variances in black-white relations throughout different regions of the US. Yehudi Cohen, on the other hand, is known for his work in anthropology; however, the typology in question is more closely related to geography, sociology, and history, suggesting a focus on the analysis of black ghettos based on their physical and social development.