Why does amazone basin has low density of population?

The Amazon Basin has a low population density primarily due to its challenging environmental conditions, including dense rainforests, high humidity, and poor soil quality, which make agriculture difficult. Additionally, the region is remote and lacks adequate infrastructure, limiting access to resources and services. Furthermore, the presence of diverse wildlife and the threat of diseases, such as malaria, also deter large-scale human settlement. These factors combined contribute to the sparse population in this vast area.