Prime Minister: Henry John Temple, 3rd Viscount Palmerston (Whig)
March 3
France and the United Kingdom formally declare war on China,
in the Second Opium War.
March 4
James Buchanan is sworn in, as the 15th President of the United States.
March 6
Dred Scott v. Sandford: The Supreme Court of the United States
rules that Blacks are not citizens and slaves can not sue for freedom,
driving the country further towards the American Civil War
(the ruling is not overturned until the 14th Amendment is adopted,
in 1868).
March 23
Elisha Otis' first elevator is installed (at 488 Broadway, New York City).