25 Dec 1860Mexican Liberal forcesenter Mexico City,ending Reform War
9 Jan 1861Mississippi secedesfrom Union
10 Jan 1861Florida secedesfrom Union
11 Jan 1861Alabama secedesfrom Union
19 Jan 1861Georgia secedesfrom Union
26 Jan 1861Louisiana secedesfrom Union
29 Jan 1861Kansas becomesUS state
1 Feb 1861Texas secedesfrom Union
4–9 Feb 1861Confederate Statesof America formed