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What is the main line called in the rectangular survey system that runs north and south?

  1. Baseline

  2. Prime Meridian

  3. Principal Meridians

  4. Range Line

The correct answer is: Baseline

In the rectangular survey system, the main line that runs north and south is called the Baseline. This line serves as a reference point for the survey system, from which other lines and measurements are made. The Prime Meridian is a line that runs north and south, but it is not part of the rectangular survey system. Principal Meridians are used to divide townships in the survey system, and Range Lines run east and west.