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20th Century Decadian

One world history event per decade for the 20th Century

Logo of 20th Century Decadian
First Published
Sun May 21 2023
Last Published
Sun May 28 2023
Number of cards
11
Number of dates
11
Number of links
0
Link density
0
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1905

Einsteins Theory of Special Relativity

not to be confused with Theory of General Relativity (1915)

1914

Start of World War I

1925

Discovery of Tutunkhamun’s Tomb

Discovered by Howard Carter

1939

Start of World War II

1945

Hiroshima destroyed by atomic bomb

First use of nuclear weapons in warfare

1953

Polio vaccine created

by Jonas Salk in the USA . Self experimented

1961

Yuri Gagarin first man in space

1975

Microsoft founded

Bill Gates and Paul Allen

1989

Berlin Wall falls

1990

Nelson Mandela released

2000

“Mother of wi-fi” Hedy Lamar dies

Actress and inventor. Developed frequency-hopping spread spectrum technology.