MAPS OF HISTORY · ON THIS DAY · December 20 · 1860
ON THIS DAY · 20 DECEMBER 1860
Secession
20 Dec 1860 — South Carolina’s convention votes 169–0 to leave the Union, citing in its own declaration “an increasing hostility… to the institution of slavery.” Six more states follow by February.
THE MOMENT IN CONTEXT
Between Lincoln’s election and his inauguration lie four months in which the Union dissolves while a lame-duck government watches. South Carolina goes first (20 December, by 169 votes to 0), and its declaration is refreshingly free of later euphemism: it lists the free states’ “increasing hostility… to the institution of slavery,” their refusal to return fugitives, their toleration of abolition societies. Six states follow by February; delegates at Montgomery write a constitution that forbids their own congress ever to impair slavery. The last grand compromise — Crittenden’s constitutional amendments to protect slavery forever below a line — fails because Lincoln will not concede the one point his election settled: no expansion.
From Chapter 2 — Secession Winter of The American Civil War, 1861–1865 (APR 1861).
OPEN THE INTERACTIVE MAP →New here? Chapters 1–2 of every atlas are free to sample, and the WW2 atlas is free in full. One membership opens all ten — the Cartographer’s Circle.
TEACH THIS IN 5 MINUTES
- Why it happened — A four-month vacuum of power. The Constitution then left presidents-elect waiting until March. Buchanan held that secession was illegal but that coercion was also illegal — a…
- The turn — Fort Sumter, 12–14 April 1861. The bombardment killed no one in combat and changed everything: it turned a constitutional dispute into a rebellion under fire, brought four more…
- What it changed — The upper South flips — and doubles the war. Virginia brings the Tredegar Iron Works (the South’s only great foundry), Robert E. Lee, and a border on Washington itself. The capital moves to…
Then ask the room: Lincoln could have evacuated Sumter and bought time — many advisers urged exactly that. Was provoking the crisis a mistake? The argued answer is on the chapter page →
THE ATLAS THAT SHOWS IT
THE DISPATCH
One short 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