The American Civil War, 1840–1877 · THE MAP IN
Map of North America in July 1848
The Cession — and the question
North America in July 1848: The Cession — and the question. The map shows who held what: The Union, Mexico, 1840–54.
Open this map in the interactive atlas →
WW2 is free — every chapter. Try chapters 1–2 of any 2 other atlases (3 with a free account). Opening a new atlas uses one of them. Membership opens all 21 — Join.
Free printable American Civil War study guide, sent by email ↓
On the ground
- the Mexican Cession — won from Mexico in 1848, and the question it raised: slave soil or free? The Wilmot Proviso said free; the Senate never agreed
- the Gadsden strip — still Mexican until the purchase of 1853–54 bought it for a southern railroad route
The chapters of this moment
Related maps
THE FREE PRINTABLE STUDY GUIDE
Join the Dispatch — a short welcome series, then a letter when a new atlas opens — and the printable study guide for The American Civil War is yours now, free.
NO TRACKING · YOUR ADDRESS IS USED FOR THE DISPATCH AND NOTHING ELSE · UNSUBSCRIBE ANYTIME