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Publication Extents

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Boundaries, areas, geographic centers and altitudes of the United States and the several States with a brief record of important changes in their territory
Edward M. Douglas
1923, Bulletin 689
Boundaries between countries are established by treaties made by the sovereign powers concerned.A boundary between two States of the United States may be changed by agreement of the State legislatures, but this agreement must be approved by Congress. The United States Congress can not change a State boundary without the...