Births on April 4

Hillel Oppenheimer, German-Israeli botanist and academic (d. 1971)

Hillel Oppenheimer (Hebrew: הלל אופנהיימר, born Heinz Reinhard Oppenheimer; 4 April 1899 – 15 June 1971), was an Israeli professor of botany.

2 Feb

Canberra
The Australian Premiers' Conference held in Melbourne decides to locate Australia's capital city, Canberra, between Sydney and Melbourne.
4 Feb

Battle of Manila (1899)
The Philippine-American War begins with the Battle of Manila.
6 Feb

Treaty of Paris (1898)
Spanish-American War: The Treaty of Paris, a peace treaty between the United States and Spain, is ratified by the United States Senate.
6 Mar

Aspirin
Bayer registers "Aspirin" as a trademark.
18 Apr

Royal charter
The St. Andrew's Ambulance Association is granted a royal charter by Queen Victoria.