= Second principal meridian
{wiki=Second_principal_meridian}
The Second Principal Meridian is one of the principal meridians used in the Public Land Survey System (PLSS) in the United States. Principal meridians are the key reference lines used in the surveying and division of land. Each meridian serves as a baseline for establishing townships and ranges, which help in the systematic parceling of land primarily in the western United States. The Second Principal Meridian, established in 1815, runs through a specific location in the U.S.
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