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		 Date | 
		 Event(s) | 
	
| 1  | 1904  |  | 
| 2  | 1905  |  | 
| 3  | 1906  |  | 
| 4  | 1907  |  | 
| 5  | 1908  |  | 
| 6  | 1909  |  | 
| 7  | 1910  | - 1910: UK - Georges Claude discovered that electricity conducted through a tube of the rare inert gas, neon, gives a bright red glow and that other gases gave off other colors, e.g., argon gives blue, helium gives yellow and white, etc.
 
- 1910: UK - First live opera broadcast
 
- 1910: UK - Halley's Comet Makes an Appearance
 
- 1910: UK - The Tango Catches On
 
- 1910: South Africa - Formation of Union of South Africa
 
- 1910: UK - Death of Edward VII
 
- 1910: UK - Population of England/Wales 36,070, Scotland - 4,761, N. Ireland - 1,251
 
- 1910: UK - Contributory National Insurance Scheme introduced by David Lloyd George, provides medical care, maternity benefits and sick pay
 
- 1910: UK - Parliament Act reduces House of Lords' veto to delaying power; House of Commons begins to pay members a stipend
 
- 1910: UK - There are 146,000 female clerical workers in England, up from 22,000 in 1891, 7,000 in 1881, and 19 in 1851
 
- 1910: USA - Thomas Edison demonstrated the first talking motion picture.
 
- 1910: UK - Infant mortality now 110 per 1000 live births, declines steadily to 24.4 in 1956; emigration reaches about 464,000/year; divorces average 823/year, go to 3,619/year in 1920-1922, 7,955/year in 1939 (latter rise because willful desertion, cruelty and incurable insanity added to causes in 1937)
 
- 1910: UK - Strikes of seaman, dock and transport workers, general railway strike for higher wages during period to 1912
 
- 20 Jan 1910: UK - George V, ruler of England to 1936. House of Windsor (name adopted Jul 17, 1917): 2nd son of Edward VII, married Princess Mary of Teck.
 
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| 8  | 1911  |  | 
| 9  | 1912  | - 1912: North Sea - The Sinking of the Titanic: 1,515 people lose their lives.
 
- 1912: UK - Parachutes Invented
 
- 1912: UK - Piltdown Man, the 'Missing Link,' Discovered but later revealed as a fraud
 
- 1912: SOS Accepted as Universal Distress Signal
 
- 1912: UK - Motorized movie cameras invented, and replaced hand-cranked cameras.
 
- 1912: UK - The first tank patented by Australian inventor De La Mole.
 
- 1912: USA - Clarence Crane created Life Savers candy
 
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| 10  | 1913  | - 1913: USA - Leo Baekeland invented a plastic laminate, known as Bakelite, and later as Formica
 
- 1913: Detroit, MI, USA - First assembly line introduced in Ford automobile factory
 
- 1913: New York, NY, USA - The Armory Show, an international display of some 1600 works of modern art, and one of the more important U.S. art exhibitions ever held, opens at the 69th-regiment armory. It arouses public curiosity, generates sensational news coverage, and helps change the direction of American art
 
- 1913: USA - Personal Income Tax introduced
 
- 1913: Washington, DC, USA - Woodrow Wilson president 1913-1921.
 
- 1913: UK - The crossword puzzle was invented by Arthur Wynne.
 
- 1913: USA - The Merck Chemical Company patented what is now known as ecstasy.
 
- 1913: USA - Mary Phelps Jacob invents the bra
 
- 1913: USA - Gideon Sundback invents the modern zipper.
 
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| 11  | 1914  | - 1914: UK - Battle of the Marne
 
- 1914: USA - Charlie Chaplin First Appeared as the Little Tramp
 
- 1914: UK - First Traffic Light
 
- 1914: Panama - Panama Canal Officially Opened
 
- 1914: Egypt - Britain proclaims protectorate over Egypt
 
- 1914: France - Stunning British casualty figures come from Loos -60,000; in on the Somme, 60,000 in one day; total for 5-month offensive - 400,000; Germans use poison gas at Ypres
 
- 1914: Ireland - Easter Monday Irish rebellion, Irish Volunteers (later Irish Republican Army) proclaim Irish Republic; German submarine lands Sir Roger Casement who is arrested, German ship with rifles intercepted off Irish coast, Casement executed; Sinn Fein and Ulster cannot agree on partition
 
- 1914: France - Passchendaele, British advance of 5 miles costs 400,000 casualties
 
- 1914: UK - Balfour Declaration promises Jews home in Palestine
 
- 1914: UK - First use of massed tanks (Battle of Cambrai)
 
- 1914: UK - King George V adopts Windsor as Royal Family's English surname in place of family's German name
 
- 1914: USA - Garrett A. Morgan invents the Morgan gas mask
 
- 4 Aug 1914: World War I begins and lasts until 1918, because Germany violates a treaty to respect neutrality of Belgium; Turkey enters war on Germany's side
 
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| 12  | 1915  |  | 
| 13  | 1916  |  | 
| 14  | 1917  |  | 
| 15  | 1918  | - 1918: UK - Influenza Epidemic
 
- 1918: Russia - Czar Nicholas II and his family are killed
 
- 1918: UK - Summer:Great Influenza Epidemic begins, reaches height end of year, new outbreak first quarter of 1919: England and Wales lose 150,000 (15,000 in London alone)
 
- 1918: UK - Final casualties for World War I - almost 1 million British Empire men killed, about 3 million maimed (744,000 killed are from UK)
 
- 1918: UK - Women over 30 given the vote (complete voting equality with men comes in 1928), all men over 21 (except peers, lunatics and felons) given vote
 
- 1918: UK - Consumer purchasing power now about 1/3 of what it was in 1914
 
- 1918: USA - Charles Jung invented fortune cookies.
 
- 1918: UK - Police strikes this year and the next
 
- 9 Nov 1918: Europe - Kaiser abdicates, peace signed two days later at Treaty of Versailles, ending World War I
 
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| 16  | 1919  |  | 
| 17  | 1920  | - 1920: India - Bubonic Plague strikes
 
- 1920: UK - League of Nations Established
 
- 1920: UK - Population of England/Wales - 37,887, Scotland - 4,882, N.Ireland - 1,258
 
- 1920: UK - Economic slump, 2,170,000 unemployed
 
- 1920: Palestine - Serious clashes between Jews and Arabs
 
- 1920: USA - US restricts immigration
 
- 1920: Ireland - Southern Irish parliament passes Government of Ireland Act, civil war effectively ends (until 1968)
 
- 1920: UK - Lloyd George sells honours in return for party contributions, partly responsible for downfall of Coalition government
 
- 1920: Egypt - Britain recognizes Egyptian independence
 
- 1920: UK - British Broadcasting Company (BBC) begins transmission of speech over air to public
 
- 1920: Italy - Benito Mussolini becomes fascist dictator
 
- 1920: UK - First football cup final at Wembley
 
- 1920: UK - Greyhound racing becomes popular
 
- 1920: UK - Radio and cinema begin growth (by 1929, 3,000 cinemas in Britain)
 
- 1920: UK - Convictions for drunkenness fall from 189,000 in 1913 to 53,000 in 1930
 
- 1920: France - Tuberculosis vaccine developed
 
- 1920: UK - The tommy gun patented by John T Thompson.
 
- 1920: USA - The Band-Aid invented by Earle Dickson
 
- 1920: Ireland - Irish Republican Army begins Civil War with raids on police barracks and income tax offices all over Ireland
 
- 1920: UK - Communist Party of Great Britain founded; affiliation with Labour Party rebuffed = schism between communism and socialism
 
- 1920: UK - Population of Great Britain has grown by 5 per cent, emigration overseas declines from 256,000 in 1923 (post-war peak) to 92,000 in 1930 and many return to offset those leaving; British population gravitates to south and away from depressed areas of South Wales and northern England, Greater London is now over 8 million
 
- Dec 1920: Ireland - New Government of Ireland Act proposes partition of Ireland into Ulster (north) and Irish Free State (south), each to have its own government
 
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| 18  | 1921  |  | 
| 19  | 1922  |  | 
| 20  | 1923  |  | 
| 21  | 1924  |  | 
| 22  | 1925  |  | 
| 23  | 1926  |  | 
| 24  | 1927  |  | 
| 25  | 1928  |  | 
| 26  | 1929  |  | 
| 27  | 1930  |  | 
| 28  | 1931  | - 1931: UK - Housing Act passes, provides subsidies for slum clearance
 
- 1931: USA - Al Capone Imprisoned for Income Tax Evasion
 
- 1931: UK - Auguste Piccard Reaches Stratosphere
 
- 1931: Rio de Janeiro, Brazil - Christ Monument Built on Hilltop
 
- 1931: New York, NY, USA - Empire State Building Completed
 
- 1931: USA - First official US National Anthem
 
- 1931: UK - Census shows British professional workers now number .75 million (8 per cent); up from 80,000 in 1921 Census: population: England/Wales - 39,952, Scotland - 4,842, N. Ireland - 1,243
 
- 1931: USA - Harold Edgerton invented stop-action photography.
 
- 1931: Germany - Germans Max Knott and Ernst Ruska co-invent the electron microscope.
 
- 24 Aug 1931: UK - Resignation of Labour government accepted by King, asks Ramsay MacDonald to form National Government (Coalition) to deal with economic crisis
 
- 21 Oct 1931: UK - General Election, vote for National Government overwhelming, more votes for Conservatives, Liberal party in disarray
 
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| 29  | 1932  | - 1932: UK - Agricultural Marketing Act passed, regulates quality of produce
 
- 1932: USA - Air Conditioning Invented
 
- 1932: Amelia Earhardt First Woman to Fly Solo Across the Atlantic
 
- 1932: Cambridge, UK - Scientists Split the Atom
 
- 1932: USA - Zippo Lighters Introduced
 
- 1932: Ireland - De Valera succeeds Cosgrave as Prime Minister of Irish Free State, ousts British Governor-General, abolishes senate, alters law re citizenship to distinguish Irish nationality from British, but still claims Commonwealth membership
 
- 1932: USA - Polaroid photography invented by Edwin Herbert Land.
 
- 1932: UK - Unemployment falls from 3 million to below 2 million in July 1935; production rises, but imports steady, exports decline; new industries booming - chemicals, rayon, cars, radio, cost of living falls
 
- Sep 1932: UK - 6-7 million living on 'dole', worse in Tyne and Tees and Welsh valleys
 
  | 
| 30  | 1933  |  | 
| 31  | 1934  |  | 
| 32  | 1935  |  | 
| 33  | 1936  | - 1936: UK - Edward VIII, ruler of England 1936. House of Windsor (name adopted Jul 17, 1917): Eldest son of George V.
 
- 1936: UK - BBC starts regular TV broadcasts
 
- 1936: USA - Dale Carnegie Publishes How to Win Friends and Influence People
 
- 1936: Germany - Nazi Olympics in Berlin
 
- 1936: Spain - Spanish Civil War Begins. Germany and Italy help rebels against government, Soviet Union aids government, as do International Brigade with volunteers from European countries and US during period to 1939
 
- 1936: UK - Arabs attack Jews and British troops and police, riots, strikes, outbursts of great violence, Jews attack Arabs and British, disorder continues through beginning of World War II
 
- 1936: USA - Bell Labs invents the voice recognition machine.
 
- 1936: USA - Samuel Colt patents the Colt revolver.
 
- 1936: Germany - Hitler and Mussolini make Rome-Berlin Axis agreement to conduct aggression together, followed by German agreement with Japan which Italy signs later
 
- 20 Jan 1936: UK - Death of King George V
 
- 12 May 1936: UK - George VI, ruler of England 1936-1952. House of Windsor (name adopted Jul 17, 1917): 2nd son of George V, Duke of York; married Lady Elizabeth Bowes-Lyon.
 
- 16 Nov 1936: UK - Prime Minister Stanley Baldwin learns Edward VIII wants to marry twice-divorced Mrs.Simpson and will abdicate if necessary, public storm breaks on 2- 3 December, King abdicates on 5 December, announces 10 December, Abdication Act rushes through 11 December; Duke of York (father of Queen Elizabeth II) becomes George VI
 
  | 
| 34  | 1937  |  | 
| 35  | 1938  |  | 
| 36  | 1939  |  | 
| 37  | 1940  |  | 
| 38  | 1941  |  | 
| 39  | 1942  |  | 
| 40  | 1943  |  | 
| 41  | 1944  | - 1944: France - D-Day landings
 
- 1944: France - First German V1 and V2 Rockets Fired
 
- 1944: Berlin, Germany - Hitler Escapes Assassination Attempt
 
- 1944: USA - The kidney dialysis machine invented by Willem Kolff.
 
- 1944: USA - Synthetic cortisone invented by Percy Lavon Julian.
 
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| 42  | 1945  |  | 
| 43  | 1946  |  | 
| 44  | 1947  |  | 
| 45  | 1948  | - 1948: USA - Life magazine makes painter Jackson Pollock an overnight celebrity by devoting a three-page spread with color photographs to him and his paintings under the headline, Jackson Pollock: Is He the Greatest Living Painter in the United States?; Abstract Expressionism becomes a subject of widespread popular ridicule.
 
- 1948: Berlin, Germany - Berlin Airlift
 
- 1948: UK - Big Bang Theory Formulated
 
- 1948: India - Gandhi Assassinated
 
- 1948: South Africa - Policy of Apartheid Begun
 
- 1948: Israel - State of Israel Founded
 
- 1948: USA - The Frisbee® invented by Walter Frederick Morrison and Warren Franscioni.
 
- 1948: USA - Velcro® invented by George de Mestral.
 
- 1948: USA - Robert Hope-Jones invented the Wurlitzer jukebox
 
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| 46  | 1949  |  | 
| 47  | 1950  |  | 
| 48  | 1951  |  | 
| 49  | 1952  |  |