Botha Transvaal Premier
Mar 2 General Louis Botha named premier of Transvaal
- Mar 2 Georges Feydeaus' "La Puce à l'Oreille" premieres in Paris
- Mar 5 1st radio broadcast of a musical composition aired
- Mar 5 The second Duma opens in St. Petersburg, Russia and 40,000 demonstrators have to be dispersed by Russian troops
- Mar 9 1st involuntary sterilization law enacted, Indiana
- Mar 9 Lady Gregory's "Rising of the Moon" premieres in Dublin
- Mar 14 By Presidential order, Japanese laborers are excluded from entering the USA
- Mar 15 Finland is 1st European country to give women the right to vote
- Mar 16 First 1st-class cricket game between NSW & Western Australia
- Mar 19 18.8 cm precipitation at Lewer's Ranch, Nevada (state record)
- Mar 21 US sends troops to Honduras to halt the Nicaraguan army takeover
- Mar 22 69th Grand National: Alf Newey wins aboard 8/1 chance Eremon
- Mar 22 The new Boer government in the Transvaal passes an Asiatic Registration Bill, that restricts immigration from India
- Mar 24 The first issue of the Georgian Bolshevik newspaper Dro is published
- Mar 25 Stanley Cup, Winnipeg Auditorium, Winnipeg, Manitoba: Montreal Wanderers lose to Kenora Thistles, 6-5 but win on 2 game aggregate, 12-8
- Mar 31 Romanian Army puts down Moldavian farmers' revolt
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