James–Younger Gang
Mar 2 Jesse James' gang robs bank in Savannah Missouri, 1 killed
- Mar 2 US Congress abolishes peonage in New Mexico
- Mar 2 US Congress creates the Department of Education
- Mar 6 29th Grand National: John Page wins aboard Irish 16/1 shot Cortolvin; trainer Harry Lamplugh's second GN victory
- Mar 8 British North America Act is passed in the House of Commons, serves as Canada's constitution for more than 100 years
Don Carlos
Mar 11 Giuseppe Verdi's opera "Don Carlos" premieres in Paris
Historic Publication
Mar 16 First publication of an article by Joseph Lister outlining the discovery of antiseptic surgery, in "The Lancet"
Second Reconstruction Act Passed
Mar 23 Congress passes 2nd Reconstruction Act over President Andrew Johnson's veto
- Mar 29 British North America Act (Canadian constitution) is given Royal Assent
- Mar 29 US Congress first approves building of Lincoln Memorial
Alaska Purchase
Mar 30 The United States buys Alaska from Russia for $7,200,000 (109 million in 2018 dollars), roughly 2 cents an acre