Germany first observes the International Holocaust Remembrance Day.
Soviet Union cedes Porkkala back to Finland
The Wedding March by Felix Mendelssohn is played at the marriage of Queen Victoria’s daughter, Victoria, and Friedrich of Prussia, and becomes a popular wedding processional.
Charles VII Albert becomes Holy Roman Emperor.
Elizabeth Blackwell is awarded her M.D. by the Geneva Medical College of Geneva, New York, becoming the United States’ first female doctor
Bloody Sunday in Saint Petersburg, beginning of the 1905 revolution.
The catastrophic eruption of Mount Lamington in Papua New Guinea claims 2,942 lives.
Hong Kong Island is occupied by the British during the First Opium War.
World War II: The Japanese conquest of Burma begins.
Scientists identify a previously unknown bacterium as the cause of the mysterious Legionnaires’ disease.