1930 events in history

Jan 6 The first diesel-engined automobile trip is completed, from Indianapolis, Indiana, to New York, New York
Jan 26 The Indian National Congress declares 26 January as Independence Day or as the day for Poorna Swaraj ("Complete Independence") which occurred 17 years later
Jan 31 3M begins marketing Scotch Tape
Feb 10 Yên Bái mutiny in French Indochina
Feb 16 The Romanian Football Federation joins FIFA
Feb 18 Elm Farm Ollie becomes the first cow to fly in a fixed-wing aircraft and also the first cow to be milked in an aircraft
Feb 18 While studying photographs taken in January, Clyde Tombaugh discovers Pluto
Mar 6 International Unemployment Day demonstrations globally initiated by the Comintern
Mar 12 Mahatma Gandhi leads a 200-mile march, known as the Salt March, to the sea in defiance of British opposition, to protest the British monopoly on salt
Mar 13 The news of the discovery of Pluto is telegraphed to the Harvard College Observatory
Mar 28 Constantinople and Angora change their names to Istanbul and Ankara
Mar 29 Heinrich Brüning is appointed German Reichskanzler
Mar 31 The Motion Picture Production Code is instituted, imposing strict guidelines on the treatment of sex, crime, religion and violence in film, in the U.S., for the next thirty-eight years
Apr 2 After the mysterious death of Empress Zewditu, Haile Selassie is proclaimed emperor of Ethiopia
Apr 4 The Communist Party of Panama is founded
Apr 6 Gandhi raises a lump of mud and salt and declares, "With this, I am shaking the foundations of the British Empire," beginning the Salt Satyagraha
Apr 18 BBC reported there was no news, then played out with piano music
Apr 22 The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding
Apr 28 The first night game in organized baseball history takes place in Independence, Kansas
May 1 The dwarf planet Pluto is officially named
May 24 Amy Johnson lands in Darwin, Northern Territory, becoming the first woman to fly solo from England to Australia (she left on May 5 for the 11,000 mile flight)
May 27 The 1,046 feet (319 m) Chrysler Building in New York City, the tallest man-made structure at the time, opens to the public
Jun 9 A Chicago Tribune reporter, Jake Lingle, is killed during rush hour at the Illinois Central train station by Leo Vincent Brothers, allegedly over a $100,000 gambling debt owed to Al Capone
Jun 16 Sovnarkom establishes decree time in the USSR
Jun 17 U.S. President Herbert Hoover signs the Smoot-Hawley Tariff Act into law
Jun 18 Groundbreaking ceremonies for the Franklin Institute are held
Jun 21 One-year conscription comes into force in France
Jul 7 Industrialist Henry J. Kaiser begins construction of the Boulder Dam (now known as Hoover Dam)
Jul 11 Australian cricketer Donald Bradman scores a world record 309 runs in one day, on his way to the highest individual Test innings of 334, during a Test match against England
Jul 30 In Montevideo, Uruguay wins the first FIFA World Cup
Jul 31 The radio mystery program The Shadow airs for the first time
Aug 6 Judge Joseph Force Crater steps into a taxi in New York and disappears never to be seen again
Aug 7 The last confirmed lynching of blacks in the Northern United States occurs in Marion, Indiana. Two men, Thomas Shipp and Abram Smith, are killed
Aug 9 Betty Boop makes her cartoon debut in Dizzy Dishes
Aug 16 The first color sound cartoon, called Fiddlesticks, is made by Ub Iwerks
Aug 16 The first British Empire Games were opened in Hamilton, Ontario by the Governor General of Canada, the Viscount Willingdon
Aug 29 The last 36 remaining inhabitants of St Kilda are voluntarily evacuated to other parts of Scotland
Sep 6 Democratically elected Argentine president Hipólito Yrigoyen is deposed in a military coup
Sep 8 3M begins marketing Scotch transparent tape
Sep 12 In cricket Wilfred Rhodes ends his 1110-game first-class career by taking 5 for 95 for H.D.G. Leveson Gower's XI against the Australians
Sep 17 The Ararat rebellion is suppressed
Sep 20 Syro-Malankara Catholic Church is formed by Archbishop Mar Ivanios
Sep 27 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
Oct 5 British airship R101 crashes in France en route to India on its maiden voyage
Oct 24 A bloodless coup d'état in Brazil ousts Washington Luís Pereira de Sousa, the last President of the First Republic. Getúlio Vargas is then installed as "provisional president."
Oct 27 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
Nov 2 Haile Selassie is crowned emperor of Ethiopia
Nov 3 Getúlio Dornelles Vargas becomes Head of the Provisional Government in Brazil after a bloodless coup on October 24
Nov 11 Patent number US1781541 is awarded to Albert Einstein and Leó Szilárd for their invention, the Einstein refrigerator
Nov 18 Soka Kyoiku Gakkai, a Buddhist association later renamed Soka Gakkai, is founded by Japanese educators Tsunesaburō Makiguchi and Jōsei Toda