Final answer:
By 2050, urbanization is expected to encompass 68% of the global population, prompting the need for extensive urban infrastructure development and sustainable practices to ensure manageable growth, particularly in fast-growing regions like Africa.
Step-by-step explanation:
Urbanization is a significant trend occurring globally, with a projected 68% of the world population living in urban areas by 2050. As economies develop, there is a noticeable shift in the population from rural to urban areas due to various agglomeration factors such as employment opportunities and improved access to services. America will face one of its largest public works challenges in the coming decades as it will need to rebuild and expand its urban infrastructure to accommodate the growing urban population, which will necessitate sustainable development to mitigate environmental degradation.
In regions like Africa, the urbanization process is set to dramatically change the landscape, leading to the creation of new megacities. For instance, Ethiopia's population is expected to double by 2040, intensifying the focus on cities like Addis Ababa. Managing this urban explosion effectively will be critical, not just for Africa but for emerging economies around the world.
North America currently has the highest urbanization rate, with about 80% of the population living in metropolitan areas, which include suburbs around cities. This urban growth presents challenges that require innovative public works solutions and the pursuit of sustainable development to ensure a livable future for coming generations.