| 1925 |
1926 |
1927 |
1928 |
1929 |
1930 |
1931 |
1932 |
1933 |
1934 |
1935 |
1936 |
1937 |
1938 |
1939 |
1940 |
1941 |
1942 |
1943 |
1944 |
1945 |
1946 |
1947 |
1948 |
1949 |
 USA:
Calvin Coolidge (President) |
USA:
Herbert Hoover (Pres.) |
USA:
Franklin Roosevelt (Pres.) |
USA:
Harry Truman (Pres.) |
| William
H. Taft (Chief Justice of the Supreme Court) |
Charles
Evans Hughes (Chief Justice) |
Harlan
Stone (Chief Justice) |
Frederick
Vinson (Chief Justice) |
| Nicholas
Longworth (Speaker of the House) |
John
Garner (House Speaker) |
Henry
Rainey (House Speaker) |
Joseph Byrns |
William
Bankhead (House Speaker) |
Sam
Rayburn (House Speaker) |
Joseph
Martin (House Speaker) |
Sam Rayburn |
| Charles
Curtis (Senate Majority Leader) |
James
Watson (Senate Maj.) |
Joseph
Robinson (Senate Maj.) |
Alben
Barkley (Senate Maj.) |
Wallace
White (Senate Maj.) |
Scott Lucas |
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Pacific War |
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|
Mackenzie King |
Arthur Meighen |
Canada:
William Lyons _Mackenzie King |
Canada:
Richard Bennett |
Canada:
William Lyons _Mackenzie King |
Canada:
Louis _St. Laurent |
| 1925 |
1926 |
1927 |
1928 |
1929 |
1930 |
1931 |
1932 |
1933 |
1934 |
1935 |
1936 |
1937 |
1938 |
1939 |
1940 |
1941 |
1942 |
1943 |
1944 |
1945 |
1946 |
1947 |
1948 |
1949 |
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|
Second World War |
|
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|
Stanley Baldwin |
UK:
Ramsay MacDonald |
Stanley Baldwin |
UK:
Neville Chamberlain |
UK:
Winston Churchill |
UK:
Clement Attlee |
| UK: _George_ V |
_Edward_
VIII |
UK: _George_ VI |
 France:
Third Republic |
Vichy France: Philippe Pétain |
France:
Fourth Republic |
 Deutschland:
Weimar Republic |
Deutschland (3rd Reich):
Adolph Hitler |
 Deutschland: 4-Power
Occupation |
BRD |
DDR |
 Italia: Benito Mussolini |
|
 Italia:
Alcide de Gaspari |
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Great Patriotic
War/ Russian Front |
|
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|
 USSR:
Joseph Stalin |
 |
Polska: Joseph Pilsudski |
|
|
|
Polska:
Boleslaw Bierut |
 España: Miguel _Primo
de Rivera_ y Orbaneja |
 España:
Niceto _Alcalá Zamora_ y Torres |
 España:
Manuel _Azaña_ y Díaz |
España: Francisco
_Franco_ Bahamonde |
| España: King _Alfonzo_
XIII |
|
|
|
|
Spanish
Civil War |
|
|
|
|
Greek Civil War |
 Pope _Pious_ XI |
Pope _Pious_ XII |
| 1925 |
1926 |
1927 |
1928 |
1929 |
1930 |
1931 |
1932 |
1933 |
1934 |
1935 |
1936 |
1937 |
1938 |
1939 |
1940 |
1941 |
1942 |
1943 |
1944 |
1945 |
1946 |
1947 |
1948 |
1949 |
(Taishô Emperor) Yoshihito |
Nihon: (Showa Emperor)
Hirohito |
(Constitutional Monarch)
Hirohito |
|
(Regent) Hirohito |
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|
_Hirota_ Kôki |
_Konoe_ Fumimaro (PM) |
|
_Tôjô_ Hideki (PM) |
Japan: SCAP (to 1952) |
Chinese Warlord Era |
|
|
|
|
|
 Manchukuo: _Pu Yi |
Chinese Civil War |
| Chinese Civil War |
Sino-Japanese War |
|
 Chung Kuo: _Chiang_ Kai
Shek |
Zhong Guo: _Mao_ Zedong |
 1st Marquess of Reading |
India: Edward Wood, Lord
Irwin & 1st Earl of Halifax |
Lord Goschen (temp.) |
India: Freeman
Freeman-Thomas, 1st Marquess of Willingdon |
India: Sir George Stanley
(temp.) |
India: Victor Hope, 2nd
Marquess of Linlithgow |
India: Archibald Wavell,
1st Viscount & Earl Wavell |
Louis Mountbatten,
1st Viscount & Earl Mountbatten |
Bharat: Jawaharlal Nehru |
Pakistan: Muhammad Jinnah |
| 1925 |
1926 |
1927 |
1928 |
1929 |
1930 |
1931 |
1932 |
1933 |
1934 |
1935 |
1936 |
1937 |
1938 |
1939 |
1940 |
1941 |
1942 |
1943 |
1944 |
1945 |
1946 |
1947 |
1948 |
1949 |
| Philippines |
 Philippines: Manuel Louis
_Quezón_ y Molina |
Philippines: Japanese
Occupation |
Philippines |
 Australia:
Stanley Bruce |
Australia: James Henry Scullin |
Australia:
Joseph Aloysius Lyons |
Australia:
Robert Menzies |
|
Australia:
John Curtin |
|
Australia:
Ben Chifley |
Robert Menzies |
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Abyssinian War |
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Chaco War |
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|
 Argentina:
Radical Rule |
Argentina:
Hipolito Yrigoyen |
Argentina:
Military/Conservative Coalition |
Argentina: Juan Perón |
 Mexico: Plutarco Elías
Calles |
|
Mexico: Lázaro Cárdenas |
Mexico: Manuel Ávila
Camacho |
Mexico: Miguel Alemán
Váldez |
| Leon Trotsky active |
|
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| Mohandas Gandhi active |
|
|
| 1925 |
1926 |
1927 |
1928 |
1929 |
1930 |
1931 |
1932 |
1933 |
1934 |
1935 |
1936 |
1937 |
1938 |
1939 |
1940 |
1941 |
1942 |
1943 |
1944 |
1945 |
1946 |
1947 |
1948 |
1949 |
| Ten-fold increase in
refrigerator sales in US |
|
|
|
General Electric
flourescent lamp |
|
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|
Television becomes common |
|
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|
Magnetic tape recording developed |
|
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|
| "Taung Child",
Australopithecus africanus |
|
Farnsworth transmits television picture |
3M Scotch Tape |
|
Plexiglas |
RCA Victor long-playing record |
Stereo recording |
Vitamin-D fortified
milk |
|
Kodachrome 3-color roll film |
|
Du Pont Nylon |
Du Pont Teflon |
Sikorsky's VS-300
helicopter |
BF Goodrich
synthetic rubber tires |
Penicillin use
becomes practical |
Messerschmitt
ME-262 jet fighter |
|
Streptomycin
antibiotic for TB |
Atomic bomb |
Slinky |
Radar Range
microwave oven |
Bell Telephone
Laboratory transistor |
Lithium salts as
mood stabilizer |
| USS Saratoga
aircraft carrier |
|
Heisenberg's
Uncertainty Principle |
Antibiotic
properties of the Penicillium mold discovered by Fleming |
Lithiated Lemon
carbonated drink (later, 7-Up) |
|
Electronic flash photography |
Neutron discovered
by Chadwick |
Toll House
chocolate chip cookies |
Drene liquid
shampoo |
Black holes
(massive collapsed stars) suggested |
|
Airship Hindenburg explodes |
Biro ball-point pen |
Automatic
transmission |
First TV station: Paramount in Chicago |
M4 Sherman battle
tank |
Nuclear chain
reaction: Chicago's Stagg Field (Fermi) |
Scuba gear |
V-2 guided missile |
Frozen orange juice
concentrate |
ENIAC electronic
digital computer |
First recorded rock
and roll song: Roy Brown, Good Rocking Tonight |
Radial tires |
|
| "boondocks" coined |
Thermega electric
blanket |
McGraw pop-up
toaster |
Sound added to motion pictures |
Sinanthropus
pekinensis, or Peking Man |
"last rites" coined |
Alka-Seltzer
antacid and analgesic |
|
Unibody car
construction |
|
B-17 Flying
Fortress bomber |
|
Hormel's processed
meat product Spam |
Xerox photocopying |
"disinformation" coined |
Artificial
insemination |
|
|
"acronym" coined |
"sociopath" coined |
The Bells of
St. Mary's |
The Best Years
of Our Lives |
Qumran (Dead Sea)
scrolls discovered |
Automobile air
conditioner |
|
| 1925 |
1926 |
1927 |
1928 |
1929 |
1930 |
1931 |
1932 |
1933 |
1934 |
1935 |
1936 |
1937 |
1938 |
1939 |
1940 |
1941 |
1942 |
1943 |
1944 |
1945 |
1946 |
1947 |
1948 |
1949 |
|
"how-to" coined |
|
"boogie-woogie" coined |
|
|
|
|
Ritz crackers |
|
|
|
Panzer IV battle
tank |
Junkers Ju 87 dive
bomber |
Mitsubishi A6M "Zero" |
Pinocchio |
|
|
|
"genocide" coined |
Aerosol spray can |
|
X-1 supersonic
aircraft |
|
|
|
|
|
Pap test |
|
|
Urey discovers
deuterium |
|
|
|
|
|
Snow White and
the Seven Dwarfs |
LSD |
Gone With the
Wind |
Soviet T-34 battle
tank |
|
Bambi |
|
|
|
|
Polaroid Land Camera, instant B&W
photography |
|
|
|
|
|
Sliced bread |
|
|
¯"As
Time Goes By" |
¯"Night
and Day" |
|
¯"Blue
Moon" |
¯"Happy
Birthday to You" |
|
"last ditch" coined |
Vickers Supermarine
Spitfire |
¯"Over
the Rainbow" |
Fantasia |
|
¯"White
Christmas" |
|
|
|
|
AK-47 assault rifle |
|
|
| 1925 |
1926 |
1927 |
1928 |
1929 |
1930 |
1931 |
1932 |
1933 |
1934 |
1935 |
1936 |
1937 |
1938 |
1939 |
1940 |
1941 |
1942 |
1943 |
1944 |
1945 |
1946 |
1947 |
1948 |
1949 |
