With such huge increases in population, why has there not been a direct and equivalent increase in urban development?

There are several reasons why there may not be a direct and equivalent increase in urban development despite huge increases in population:

1. Infrastructure limitations: Urban development requires adequate infrastructure such as transportation networks, water supply systems, sewage systems, and utilities. It takes time and significant investment to expand or build new infrastructure to accommodate a growing population.

2. Land scarcity: In many regions, there is limited available land for urban expansion due to various factors like geographical constraints, protected areas, or existing land use patterns. This can hinder the direct expansion of urban areas even when the population is increasing.

3. Planning and regulations: Urban development often requires careful planning, zoning regulations, and compliance with various environmental and building codes. These processes can be time-consuming and may involve bureaucratic hurdles, leading to delayed or restricted urban growth.

4. Economic factors: Urban development is influenced by economic factors such as investment opportunities, land values, and market demand. In some cases, urban development might be slower than population growth due to a lack of economic incentives or limited demand for new housing or infrastructure.

5. Social and cultural factors: Changes in population do not always directly translate into urban development. Factors like social preferences, cultural norms, or traditional settlements can influence the pace and pattern of urban growth. Some populations may prefer to live in rural or suburban areas rather than dense urban environments.

6. Constraints on human capacity: Developing cities requires skilled urban planners, architects, engineers, and professionals in various fields. The availability of skilled labor and expertise may not always match the pace of population growth, leading to slower urban development.

It is essential to note that while urban development may not directly match population increases, it doesn't imply that no development is occurring. Urban areas often undergo gradual expansion and adapt to changing population dynamics over time.