The second response is the most relevant to how the geographic distribution of resources can lead to conflict between countries about the use and management of those resources:
"With a resource that crosses country borders, use by one country can affect another. For example, Ethiopia building a dam on the Nile River might impact Egypt."
This response highlights the potential for transboundary resource issues, where one country's use of a shared resource—like water from a river—can directly affect another country, leading to conflicts over rights, management, and access to that resource.