Sustainable Development and Urban Management in Developing Countries: The Case of Africa

Today the most significant factor underlying the potential for sustainable development is urbanization. Urbanization is dominated by three factors: population growth, rural-urban migration, and subsequent urban expansion. Whereas today, nearly half of the world’s population is living in urban settlements, this ratio will increase to more than 70% by 2025. The number of so-called million cities and mega cities is growing unremittingly. By 2015, the number of cities with more than one million inhabitants is estimated to be about 300 worldwide.