THE DAY IN HISTORY · DECEMBER 20
December 20 in history
What happened on December 20: 1 moment from the Maps of History atlases, in 1860, each linked to the map that shows it.
— Secession of South Carolina
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.
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