---
title: "Sub-Saharan City Model — AP Human Geography Definition"
description: "The Sub-Saharan African city model maps cities around three CBDs, colonial-era zones, and peripheral squatter settlements. A core urban model for AP HuG Topic 6.5."
canonical: "https://fiveable.me/ap-hug/key-terms/sub-saharan-city-model"
type: "key-term"
subject: "AP Human Geography"
---

# Sub-Saharan City Model — AP Human Geography Definition

## Definition

The Sub Saharan City Model is a framework that illustrates the unique urban patterns and spatial organization found in cities across Sub-Saharan Africa. It emphasizes the varying levels of development, informal settlements, and the influence of colonial history on urban growth, while also highlighting the diverse socio-economic conditions within these cities.

## Additional Context

- **Case Studies**: Cities like Lagos, Nigeria, and Nairobi, Kenya exhibit characteristics of the Sub-Saharan city model with bustling informal economies and mixed-use zones radiating from a colonial CBD.
- **Impact**: This model influences how resources are allocated for infrastructure development, highlights the need for formalizing informal sectors, and guides interventions addressing urban sprawl and service delivery disparities.

## Review

### Related Terms

- [Urbanization](/ap-hug/key-terms/urbanization): The process by which an increasing percentage of a population comes to live in urban areas, leading to growth in cities.
- [Informal Economy](/ap-hug/key-terms/informal-economy): Economic activities that are not regulated by the government, often seen in developing regions where many people work in unregistered businesses.
- Colonial Legacy: The lasting impact of colonial rule on a country’s political, social, and economic structures, which can shape urban development patterns.

### Key Facts

- The Sub Saharan City Model often features a central business district surrounded by various zones, including residential areas that can be divided into formal and informal sectors.
- Cities following this model tend to show high levels of inequality, with wealthier residents living in well-planned areas while poorer populations often reside in overcrowded informal settlements.
- Transportation networks in these cities are crucial, as they influence accessibility and connectivity between different urban areas, affecting daily life and economic activities.
- The model reflects the historical context of colonialism, where urban planning was often focused on serving colonial interests rather than the needs of local populations.
- Environmental challenges such as inadequate infrastructure and limited public services are common issues faced by cities within this model, leading to significant urban sustainability concerns.

### How does the Sub Saharan City Model reflect the socio-economic inequalities present in urban areas?

The Sub Saharan City Model highlights significant socio-economic inequalities within urban areas, where wealthier populations reside in well-planned neighborhoods with better infrastructure and services. In contrast, poorer communities often find themselves in informal settlements characterized by overcrowding and inadequate access to essential services. This division is rooted in historical contexts and ongoing economic disparities, making it a crucial aspect of understanding urban dynamics in Sub-Saharan Africa.

### Discuss how colonial legacy has shaped the development patterns seen in the Sub Saharan City Model.

Colonial legacy plays a significant role in shaping the development patterns of cities depicted by the Sub Saharan City Model. During colonial rule, urban planning was primarily designed to meet colonial needs rather than those of local populations. This resulted in cities that often prioritize certain areas for development while neglecting others, leading to uneven growth and infrastructure disparities. Understanding this legacy is key to analyzing current urban challenges faced by these cities.

### Evaluate the effectiveness of the Sub Saharan City Model in addressing contemporary urban issues like sustainability and informality.

Evaluating the effectiveness of the Sub Saharan City Model reveals that while it provides insight into urban organization and socio-economic patterns, it may fall short in addressing contemporary issues like sustainability and informality. The model illustrates how informal economies play a vital role in urban life but does not fully capture the complexities of sustainable development amid rapid urbanization. A more comprehensive approach that integrates environmental concerns, social equity, and infrastructure development is essential for creating resilient urban environments that can support their diverse populations.