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Reference.org
Administrative division
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<p>Administrative divisions (also administrative units, administrative regions, subnational entities, or constituent states, as well as many similar generic terms) are geographical areas into which a particular independent <a href="/facts/Sovereign_state/TrUb8sns">sovereign state</a> is divided. Such a unit usually has an administrative authority with the power to take administrative or policy decisions for its area. Administrative divisions are often used as polygons in <a href="/facts/Geospatial_analysis/R6rlDzRl">geospatial analysis</a>. </p>