1940'S

WORLD WAR II

• Nazi Germany invades Poland, Denmark, Norway, Benelux, and the French Third Republic from 1939 to 194

POLITICS

• Establishment of the United Nations Charter (June 26, 1945) effective (October 24, 1945).
• Establishment of the defence alliance NATO April 4, 1949.

TECNOLOGY

• The Atanasoff-Berry computer is now considered one of the first electronic digital computing device built by John Vincent Atanasoff and Clifford Berry at Iowa State University during 1937–1942.

ECONOMY

• Debt:43 billion
• Average salary: 1299
• Minimum wage: .43 cent per hour

SCIENCE

• Physics: the development of quantum theory and nuclear physics.

Benny goodman(famous 40's musician)