Medical researcher Oswald Hope Robertson performed the first-ever blood transfusion using stored and refrigerated blood.
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Ellis Island opened as a US immigration inspection station.
Estonia joined the Eurozone and adopted the Euro as its currency.
Fidel Castro's revolutionary forces overthrew the Cuban dictator Fulgencio Batista.
The Union Jack flag was flown for the first time in Dublin, Ireland, to commemorate the union between Great Britain and Ireland.
A Scandinavian research collaboration created the first-ever internet domain name Nordu.net.