January 1861

Tuesday 01:

Porfirio Diaz conquers Mexico City.

Thursday 03:

American Civil War: Delaware votes not to secede from the United States

Wednesday 09:

Mississippi becomes the second state to secede from the Union, preceding the American Civil War.

Thursday 10:

American Civil War: Florida secedes from the United States.

Friday 11:

Alabama secedes from the United States.

Friday 18:

Georgia joins the Confederacy.

Monday 21:

American Civil War: Jefferson Davis resigns from the United States Senate.

Saturday 26:

The state of Louisiana secedes from the Union.

Tuesday 29:

Kansas is admitted as the 34th U.S. state.