The 1 / 4 abacus, which is suited to decimal calculation, appeared circa 1930, and became widespread as the Japanese abandoned hexadecimal weight calculation which was still common in China.

* Revolution of 1930: Second military overthrow of government, in which President Washington Luís was replaced by Getúlio Vargas, who became the Provisional President.

In 1930 the Heelises became partners with the National Trust in buying and managing the fell farms included in the large Monk Coniston Estate.

Daily strips have suffered as well, in 1910 the strips had an unlimited amount of panels, covering the entire width page, while by 1930 most " dailies " had four or five panels covering six of the eight columns occupied by a traditional broadsheet paper, by 1958 those four panels would be narrower, and those would have half of the space a 1910 daily strip had, and around 1998 most strips would have three panels only ( with a few exceptions ), or even two or one on an occasional basis, apart from strips being smaller, as most papers became slightly narrower.

Jomo Kenyatta ( c. 1894 – 1978 ), who became Kenya's first prime minister in 1963, wrote in 1930:

( However, it became very clear in a conversation between Scullin and King George V's Private Secretary, Lord Stamfordham, on 11 November 1930, that this was merely the official reason for the objection, the real reason being that an Australian, no matter how highly regarded personally, was not considered appropriate to be Governor-General.

Hughes finally dropped the lawsuit in late 1930 and he and hawks became good friends during the legal battle.

The film became one of the biggest hits of 1930.

Cotten made his Broadway debut in 1930, and soon became friends with Orson Welles.

In 1930, when Gallant Fox became the second horse to win all three races, sportswriter Charles Hatton brought the phrase into American usage.

He was born in Switzerland and became a French citizen in 1930.

The Nazi Party became the strongest party in the Masurian constituencies in the elections of 1930 and received its best results in the poorest areas of Masuria with the highest rate of Polish speakers.

The situation changed rapidly in the years 1925 – 1930, when working mathematical foundations were found through the groundbreaking work of Erwin Schrödinger, Werner Heisenberg, Max Born, Pascual Jordan, and the foundational work of John von Neumann, Hermann Weyl and Paul Dirac, and it became possible to unify several different approaches in terms of a fresh set of ideas.

It was updated in his dictionary Novial Lexike in 1930, and further modifications were proposed in the 1930s, but the language became dormant with Jespersen's death in 1943.

In 1930, Duke University became the second major U. S. academic institution to engage in the critical study of ESP and psychokinesis in the laboratory.

In 1930, RCA agreed to occupy the yet-to-be-constructed landmark building of the Rockefeller Center complex, 30 Rockefeller Plaza, which in 1933 became known as the RCA building, now the GE Building.

The Grice was a breed of semi-domesticated pig that became extinct in 1930.

In 1930, Teletype Corporation was purchased by the American Telephone and Telegraph Company and became a subsidiary of Western Electric.

Lyons became acting Treasurer in 1930 and helped negotiate the government's strategies for dealing with the Great Depression.

The Canadian city of Hamilton hosted the first Empire Games in 1930 ; this competition later became known as the Commonwealth Games, and is held every four years.

Though they slipped to eleventh in 1930, 1935 and 1937, the following year they became the first of the new clubs to reach the finals.

From 1927 to 1930, the rate of 24 FPS became standard for 35 mm sound film ; a speed of per second.

On 4 March 2004, he published the first of his memoirs, called " Memories 1930 – 1982 ", covering the period 1930 to 1982, when he became chancellor.

Other Christians of Kerala, who were originally of the same East-Syrian tradition, passed instead to the West-Syrian tradition and now form part of Oriental Orthodoxy ( some from the Oriental Orthodox in India united with the Catholic Church in 1930 and became the Syro-Malankara Catholic Church ).

There she took a series of sensual portraits which convinced her husband that she could play the lead in MGM's racy new film, The Divorcee ( 1930 ).

When his novel, written according to the tenets of the New Realism literary movement ( established years before by Sherwood Anderson, Sinclair Lewis and others ) was published in 1930, many of the residents were convinced that his characters were based on local inhabitants, and considered the work a slander against the town.

In 1930 Thomas " Archie " Stewart, an early aviation enthusiast and descendant of prominent local dairy farmer Lachlan Stewart, convinced his uncle Samuel Stewart to donate " Stoney Lonesome ", split between the towns of Newburgh and New Windsor, to the nearby city of Newburgh for use as an airport.

Weary of opera house politics and convinced that opera was a dying art form, Galli-Curci retired from the operatic stage in January 1930 to concentrate instead on concert performances.

* 1930 – The first British Empire Games were opened in Hamilton, Ontario by the Governor General of Canada, the Viscount Willingdon.

It was presented in Ogden's book Basic English: A General Introduction with Rules and Grammar ( 1930 ).

* General ( created in 1920 and abolished 1930, today second highest rank in Slovakia )

* Li Lisan, acting General Secretary 1929 – 1930

His reign also saw the rise to dictatorship of General Miguel Primo de Rivera, who seized control of the government by military coup in 1923 and ruled as a dictator – with the monarch's support – for seven years ( 1923 – 1930 ).

In 1930, the U. S. Department of Justice brought antitrust charges against RCA, General Electric and Westinghouse.

In 1930 this company merged with General Motors Corporation and the company's new name would be General Aviation Manufacturing Corporation ( which in turn merged with North American Aviation and was divested by GM in 1948 ).

On August 20, 1930 the General Executive Committee of RSFSR accepted the decree " On formation of the Birobidzhan national region in the structure of the Far Eastern Territory ".

In 1930, the Communist International ( Comintern ) sent Nguyễn Ái Quốc to Hong Kong to coordinate the unification of the parties into the Vietnamese Communist Party with Trần Phú as the first Secretary General.

In 1930, Keys changed the company's name to Eastern Air Transport, soon to be known as Eastern Air Lines after being purchased by General Motors and experiencing a change in corporate leadership brought on by the Airmail Act of 1934.

Michael Collins was born in Rome, Italy on October 31, 1930, to United States Army Major General James Lawton Collins, who would serve in the army for 38 years.

* Louis Romano ( born 1930 ), member of the New Jersey General Assembly.

In 1928 Chadwick Park was rebuilt, in 1929 it was renamed Hawkins Stadium, and in 1930 General Electric installed lights for night games.

Actors Lorne Greene and Lee Majors, General Secretary of the Communist Party of the USSR Leonid Brezhnev, composer John Williams, author Graham Greene, and former Mauritian QC and Politician Sir Gaetan Duval ( 1930 – 1996 ), football player Johan Cruijff, drummer Charlie Watts, Cheech Marin, Thomas Chong, television host and comedian Jay Leno, Mike Hailwood and composer John Barry musician Carlos Santana, all owned SMs.

* September, 1928-October 1, 1930 -- Major General Douglas MacArthur

After a second tour of duty in the office of the Army Chief of Staff, Grunert attended the Command and General Staff School at Fort Leavenworth, Kansas from 1930 to 1932.

Rātana candidates stood in the 1928 and 1931 General Election and in the 1930 by-election in Western Maori following the death of Maui Pomare, but they did not succeed.

In 1930, the dictator General Jorge Ubico came to power, backed by the United States, and initiated one of the most brutally repressive governments in Central American history.

Unamuno returned to Spain after the fall of General Primo de Rivera's dictatorship in 1930 and took up his rectorship again.

Upon his return to Japan, he was assigned to the Imperial Japanese Army General Staff Headquarters and eventually rose to the rank of major general, having successively served as commander of the 5th Infantry Brigade ( 1930 – 1934 ), the IJA 4th Division ( 1934 – 1937 ), and after the start of the Second Sino-Japanese War, the Imperial Japanese Army Air Service ( 1937 – 1938 ), and the IJA 2nd Army stationed in China from 1938 – 1939.

This did not prevent the Soviets from unsuccessfully targeting him for abduction in the same effort that snared exile General Alexander P. Kutepov in 1930 and later General Evgenii K. Miller in 1937.

Sarnoff became president of RCA on January 3, 1930, succeeding General James Harbord.

He was president of the Armenian General Benevolent Union ( AGBU ) from 1930 – 1932, resigning as a result of a smear campaign by the Soviet Armenian government.