In which of the following regions is high population density attributable to agricultural development?

High population density attributable to agricultural development is found in the Nile Basin. The Nile River is the longest river in the world and has been a vital source of water for irrigation for thousands of years. The Nile Basin is one of the most fertile regions in the world, and agricultural development has played a significant role in the growth of the population. The region's population density is high because of the abundance of water, fertile soil, and favorable climate, which have made it possible to support large-scale agriculture and settlement.