How might a scarcity of resources in one country affect a neighboring country?

If both countries frequently engage in trading the neighboring country may also see a reduction of products that were previously traded for by the country with a scarcity of resources. The country with scarcity could also begin to rely more upon their neighbors.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.