Final answer:
The Sudan conflict, as discussed by Hartmann, highlights the role of environmental degradation in conflict, stemming from issues like resource exploitation and political instability.
Step-by-step explanation:
According to Hartmann, the example of the Sudan conflict illustrates a) The role of environmental degradation in conflict. This is evidenced by the region's struggle with political and cultural conflicts which are often exacerbated by issues such as exploitation of natural resources, leading to environmental degradation. The Sahel and Sudan, with their colonial political borders, have faced challenges in establishing stable governments and controlling resources within their borders. This instability is intertwined with issues of poverty, corruption, and the exploitation of natural resources, which frequently result in environmental degradation and contribute to persistent conflict.