Italy signs a 20-year treaty of friendship with Ethiopia
Herbert Hoover elected the President of the US.
Good Morning, America by Carl Sandburg is written/published
The first Mickey Mouse film is made.
Alexander Fleming discovers Penicillin
H. Geiger and W. Müller construct the Geiger counter. (invented in 1908)
Radio chemistry is founded by F.A. Paneth.
Amelia Earhart is the first female to fly across the Alantic.
The Olympic Games take place