Final answer:
The statement that a region's main roads are related to its physical features is true. Roads often follow the natural contours of the landscape and physical geographic features can dictate where and how roads are developed, while also influencing political boundaries.
Step-by-step explanation:
The statement that a region’s main roads are related to its physical features is true. Natural physical geographic features significantly influence where roads and infrastructure are built, as well as political boundaries. Features such as rivers, mountain ranges, and large lakes often serve as natural guidelines for the construction of roads and setting of borders. Roads are frequently carved out in a manner that accommodates the natural terrain, winding around obstacles and following the contours of the landscape. For example, in mountainous areas, roads might need to follow the curves and inclines of the mountains, while in flatter desert regions, roads can be laid out in straight lines.
In historical contexts, the quality and direction of roads were heavily impacted by local conditions and the local authorities’ ability to maintain them. Routes had to be practical for the modes of transport available at the time, considering the geographical challenges posed by diverse terrain. Moreover, in terms of geopolitical divisions, areas like the Alpine mountain ranges in Europe and the Rio Grande between the United States and Mexico illustrate how physical features shape political boundaries and, indirectly, transportation corridors.