What are lines running north and south at 6-mile intervals east and west of the Principal Meridian called?

The correct answer identifies lines that define areas of land in a specific surveying system, particularly the Public Land Survey System (PLSS) used in the United States. Lines running north and south at 6-mile intervals east and west of the Principal Meridian are referred to as Range Lines.

These Range Lines are crucial for the systematic organization of land, facilitating the division of land into townships and sections for purposes such as sale, ownership, and taxation. By establishing a grid system, Range Lines help in accurately locating parcels of land within the broader context of the national land survey framework.

Understanding the significance of Range Lines is essential for anyone involved in land management, real estate, or legal aspects of property ownership, as they form the foundational reference for measuring and describing land.