In the United States and the prairie provinces of Canada, 18th – 21st century, a unit of land area, = 1 square mile = 640 acres (approximately 259 hectares).
The section was first defined by an act of 20 May 1785, and subsequently in the Land Act of 1796.
U.S. Revised Statutes, 2395 (a1877).
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Last revised: 23 January 2003.