Developed in the 1950s by Chauncy Harris and Edward Ullman, this model argues growth around several major foci far from the CBD.

Developed in the 1950s by Chauncy Harris and Edward Ullman, this model argues growth around several major foci far from the CBD.

• A. Latin American City Model
• B. Harris-Ullman Multiple Nuclei Model
• C. Hoyt Sector Model
• D. Islamic City Model

Answer: (B)

The idea being tested is that a city develops around multiple centers of activity rather than a single central business district. The Harris–Ullman Multiple Nuclei Model argues that as cities grow, different activities cluster around specialized hubs—such as a port area, an airport, a university district, wholesale or manufacturing zones, and residential neighborhoods with varying needs. These nuclei compete for land near transportation routes and amenities, creating several centers that influence land use and development patterns throughout the city. This explains why growth can occur far from the traditional downtown and why different parts of a city can have distinct character and functions. This perspective contrasts with models that center growth on one main core or along a single direction from the core. For example, the Latin American City Model emphasizes a central spine and a distinct ring of social strata around the CBD, not multiple centers; the Hoyt Sector Model describes growth in wedge-shaped sectors radiating from the CBD; and the Islamic City Model focuses on traditional urban form organized around religious and market cores. The description in the question aligns with having several growth foci away from the CBD, which is the hallmark of the multiple nuclei concept.

The idea being tested is that a city develops around multiple centers of activity rather than a single central business district. The Harris–Ullman Multiple Nuclei Model argues that as cities grow, different activities cluster around specialized hubs—such as a port area, an airport, a university district, wholesale or manufacturing zones, and residential neighborhoods with varying needs. These nuclei compete for land near transportation routes and amenities, creating several centers that influence land use and development patterns throughout the city. This explains why growth can occur far from the traditional downtown and why different parts of a city can have distinct character and functions.

This perspective contrasts with models that center growth on one main core or along a single direction from the core. For example, the Latin American City Model emphasizes a central spine and a distinct ring of social strata around the CBD, not multiple centers; the Hoyt Sector Model describes growth in wedge-shaped sectors radiating from the CBD; and the Islamic City Model focuses on traditional urban form organized around religious and market cores. The description in the question aligns with having several growth foci away from the CBD, which is the hallmark of the multiple nuclei concept.