World War II resulted in 60 million deaths between the Axis and Allied forces. After the war, many theaters had closed due to bombings and rationing made productions difficult. However, theaters began expanding outside major cities and the UK established the National Theatre in 1963. Bertolt Brecht developed theories of Epic theater to use drama to explore how audiences might react to controversial events, writing plays like The Resistible Rise of Arturo Ui. Joan Littlewood was a influential British theater director from 1930-1975 who founded the Theatre Workshop to entertain orphaned children freed from Nazi camps.