WHAT HAPPENED IN 1930.
Look what happened the 1930.

Bobby Jones wins the U.S. Amateur Championship to complete the Grand Slam of golf. The old structure of the grand slam was the U.S. Open, British Open, U.S. Amateur, and British Amateur. (27. September 1930)

British Airship R101 crashes in France en route to India on its maiden voyage. (5. October 1930)

A bloodless coup d'état in Brazil ousts Washington Luís Pereira de Sousa, the last President of the First Republic. Getúlio Dornelles Vargas is then installed as "provisional president." (24. October 1930)

Ratifications exchanged in London for the first London Naval Treaty, signed in April modifying the 1925 Washington Naval Treaty and the arms limitation treaty's modified provisions, go into effect immediately, further limiting the expensive naval arms race among its five signatories. (27. October 1930)

Haile Selassie is crowned emperor of Ethiopia. (2. November 1930)

Getúlio Dornelles Vargas becomes Head of the Provisional Government in Brazil after a bloodless coup on October 24. (3. November 1930)

Patent number US1781541 is awarded to Albert Einstein and Leó Szilárd for their invention, the Einstein refrigerator. (11. November 1930)

Soka Kyoiku Gakkai, a Buddhist association later renamed Soka Gakkai, is founded by Japanese educators Tsunesaburo Makiguchi and Josei Toda. (18. November 1930)

Great Depression: In a State of the Union message, U.S. President Herbert Hoover proposes a US$150 million public works program to help generate jobs and stimulate the economy. (2. December 1930)

W1XAV in Boston, Massachusetts telecasts video from the CBS radio orchestra program, The Fox Trappers. The telecast also includes the first television commercial in the United States, an advertisement for I.J. Fox Furriers, who sponsored the radio show. (7. December 1930)

Bank robber Herman Lamm and members of his crew are killed by a 200-strong posse, following a botched bank robbery in Clinton, Indiana. (16. December 1930)

Sir Muhammad Iqbal's presidential address in Allahabad introduces the Two nation theory and outlines a vision for the creation of Pakistan. (29. December 1930)