1931 events in history

Jan 6 Thomas Edison submits his last patent application
Jan 7 Guy Menzies flies the first solo non-stop trans-Tasman flight (from Australia to New Zealand) in 11 hours and 45 minutes, crash-landing on New Zealand's west coast
Jan 21 Sir Isaac Isaacs is sworn in as the first Australian-born Governor-General of Australia
Feb 3 The Hawke's Bay earthquake, New Zealand's worst natural disaster, kills 258
Feb 13 New Delhi becomes the capital of India
Feb 20 The Congress of the United States approves the construction of the San Francisco – Oakland Bay Bridge by the state of California
Mar 3 The United States adopts The Star-Spangled Banner as its national anthem
Mar 5 The British Viceroy of India, Governor-General Edward Frederick Lindley Wood and Mohandas Gandhi (Mahatma Gandhi) sign an agreement envisaging the release of political prisoners and allowing salt to be freely used by the poorest members of the population
Mar 11 Ready for Labour and Defence of the USSR, abbreviated as GTO, is introduced in the Soviet Union
Mar 14 Alam Ara, India's first talking film, is released
Mar 15 SS Viking explodes off Newfoundland, killing 27 of the 147 on board
Mar 19 Gambling is legalized in Nevada
Mar 23 Bhagat Singh, Shivaram Rajguru and Sukhdev Thapar are hanged for murder during the Indian struggle for independence
Mar 25 The Scottsboro Boys are arrested in Alabama and charged with rape
Mar 26 SwissAir is founded as the national airline of Switzerland
Mar 26 Ho Chi Minh Communist Youth Union is founded in Vietnam
Mar 31 An earthquake destroys Managua, Nicaragua, killing 2,000
Mar 31 TWA Flight 599 crashes near Bazaar, Kansas, killing eight, including University of Notre Dame head football coach Knute Rockne
Apr 14 The Spanish Cortes deposes King Alfonso XIII and proclaims the Second Spanish Republic
Apr 14 First edition of the Highway Code published in Great Britain
May 1 The Empire State Building is dedicated in New York City
May 14 Ådalen shootings: Five people are killed in Ådalen, Sweden, as soldiers open fire on an unarmed trade union demonstration
May 29 Michele Schirru, a citizen of the United States, is executed by Italian military firing squad for intent to kill Benito Mussolini
Jun 23 Wiley Post and Harold Gatty take off from Roosevelt Field, Long Island in an attempt to circumnavigate the world in a single-engine plane
Jul 1 United Airlines begins service (as Boeing Air Transport)
Jul 16 Emperor Haile Selassie I signs the first constitution of Ethiopia
Jul 24 A fire at a home for the elderly in Pittsburgh, Pennsylvania kills 48 people
Jul 31 New York, New York experimental television station W2XAB (now known as WCBS) begins broadcasts
Aug 24 France and the Soviet Union sign a neutrality/no attack treaty
Aug 24 Resignation of the United Kingdom's Second Labour Government. Formation of the UK National Government
Aug 28 France and the Soviet Union sign a treaty of non-aggression
Sep 11 Salvatore Maranzano is murdered by Lucky Luciano's hitmen
Sep 18 The Mukden Incident gives Japan the pretext to invade and occupy Manchuria
Sep 30 Start of "Die Voortrekkers" youth movement for Afrikaners in Bloemfontein, South Africa
Oct 1 The George Washington Bridge linking New Jersey and New York opens
Oct 1 Spain adopted women's suffrage
Oct 17 Al Capone convicted of income tax evasion
Oct 21 The Sakurakai, a secret society in the Imperial Japanese Army, launches an abortive coup d'état attempt
Oct 24 The George Washington Bridge opens to public traffic
Nov 7 The Chinese Soviet Republic is proclaimed on the anniversary of the October Revolution
Nov 22 Al-Mina'a SC established in Iraq
Dec 9 The Constituent Cortes approves a constitution which establishes the Second Spanish Republic
Dec 11 Statute of Westminster 1931: The British Parliament establishes legislative equality between the UK and the Dominions of the Commonwealth—Australia, Canada, Newfoundland, New Zealand, South Africa, and Ireland