Final answer:
The method of legally describing property that relies on range lines is the Rectangular survey system, which is a grid system established by Thomas Jefferson to provide a logical and orderly way of dividing land.
Step-by-step explanation:
The method of legally describing property that relies on range lines is the Rectangular survey system, also known as the township and range system. This system was established by Thomas Jefferson and it divides land using a rectangular grid system. In this system, the basic unit of division is the township, which is a square parcel of land six miles wide. Townships are further subdivided into 36 one-square-mile parcels called sections. These sections can be further divided into quarter sections and quarter-quarter sections. The township and range system is designed to provide a logical, well-ordered method to divide and describe land, making it easier to determine property boundaries compared to the irregular and often confusing descriptions found in the metes and bounds system.