The American Civil War, 1840–1877 · THE MAP IN JUN 1846

Map of the United States in June 1846

War with Mexico; Oregon divided

The United States in June 1846: War with Mexico; Oregon divided. The map shows who held what: The Union, Mexico, 1840–54.

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Map of the United States in June 1846: War with Mexico; Oregon divided. Colours show The Union, Mexico, 1840–54. — JUN 1846 · THE AMERICAN CIVIL WAR, 1840–1877

These maps are reconstructed from published sources · Cliopatria v 0.2.1 · Treaty of Guadalupe Hidalgo, 1848 · Newberry Atlas of Historical County Boundaries: historical states and territories

Source details

Cliopatria contributors / Seshat Global History Databank. Selected, combined, reprojected and corrected by Maps of History as described per layer.. CC BY4.0
US National Archives, treaty and territorial cession.. Historical treaty evidence
The Newberry Library, Atlas of Historical County Boundaries. State/territory records unioned for the displayed date; disputed/joint territories excluded from exclusive US sovereignty.. Publisher permits commercial and noncommercial lawful reuse without fees; current terms supersede obsolete NC notice in archive

Legal US boundaries come from dated Newberry records. Secession and military control use separate source layers, while campaign corridors are educational geographic reconstructions rather than surveyed continuous fronts.

reconstruction: 1840 · reconstruction: 1840-07-01 · reconstruction: 1845 · reconstruction: 1846 · vector: 1860 state-interface reference · vector: us-2a09f2b0c6ab

Layer records and reconstruction methods

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