Which challenges are faced by southern north america

Explanation:

Rivers, roads, airways and sea lanes are the main modes of transport in South America. Due to the inaccessibility of mountainous and plateau regions, as well as the inaccessibility of equatorial dense dense forests, much of the continent is devoid of means of transport. In terms of inland relations, roads here are of little importance. Due to asymmetry of the surface, the roads have not been extended much, only some roads have been constructed in the plains.

answer; the federal reserve system;