During the 1950s there were as many as 25,000 schools in the Congo.

During the early 1950s the board was divided on whether to defend communists persecuted under McCarthyism.

During the late 1950s it was sought by two rail historians, George Horn and Martin Schachne, but they did not gain access to the tunnel itself.

During the 1950s, the National Football League had grown to rival Major League Baseball as one of the most popular professional sports leagues in the United States.

During the 1950s, however, Graham began distancing himself from the older fundamentalism and, in preparation for his 1957 New York Crusade, he sought broad ecumenical sponsorship.

During his early journalism career, Marker became increasingly interested in filmmaking and experimented with photography in the early 1950s.

During the 1940s and 1950s, Casablanca was a major centre of anti-French rioting.

During the late 1950s and early 1960s Brubeck canceled several concerts because the club owners or hall managers continued to resist the idea of an integrated band on their stages.

During the 1950s, Kaye visited Australia, where he played " Buttons " in a production of Cinderella in Sydney.

During World War II and through the 1950s, high frequency (" short wave ") radio was widely used for military and diplomatic communication, and could be intercepted at great distances.

During the 1950s and 1960s, Peter van de Kamp of Swarthmore College made another prominent series of detection claims, this time for planets orbiting Barnard's Star.

During the 1950s, 1960s and 1970s, several events occurred which raised the public awareness of harm to the environment caused by man.

During the 1950s and 1960s, the electric guitar became the most important instrument in pop music.

During Japanese cinema's ' Golden Age ' of the 1950s, successful films included Rashomon ( 1950 ), Seven Samurai ( 1954 ) and The Hidden Fortress ( 1958 ) by Akira Kurosawa, as well as Yasujirō Ozu's Tokyo Story ( 1953 ) and Ishirō Honda's Godzilla ( 1954 ).

During Indian cinema's ' Golden Age ' of the 1950s, it was producing 200 films annually, while Indian independent films gained greater recognition through international film festivals.

During his career as a director, he retained an early ambition to teach science, and after his career declined in the 1950s he made some educational TV films related to science subjects.

During World War II, the urgent need for cheap, available food preservatives led to it being used again, but it was finally banned in the 1950s.

During the 1950s, when the independence of Ghana was in sight, demands grew for a separate Ewe state, an idea that Kwame Nkrumah, leader of the Gold Coast independence movement, opposed.

During the early 1950s, Groucho described his perfect woman: “ Someone who looks like Marilyn Monroe and talks like George S. Kaufman .”

During the late 1950s, high-stakes games such as Twenty One and The $ 64, 000 Question began a rapid rise in popularity.

During the 1950s — as a result of these improvements and the strong international export prices — beef, cotton, and coffee became significant export products for the first time.

During the later 1950s, Great Britain emerged as a producer of horror films.

During the 1950s, Holden dominated the Australian car market.

During the 1950s and 1960s the skyline of London altered dramatically as tower blocks were erected, although these later proved unpopular.

During the later ' 60s Rushton spent much of his time in Australia, following Arlene Dorgan back to her homeland.

During the ' 50s and ' 60s a new generation of architects like Aldo van Eyck, J. B. Bakema and Herman Hertzberger, known as the ‘ Forum generation ’ ( named after a magazine called Forum ) formed a connection with international groups like Team 10.

During the ' 60s and ' 70s, the Pistons were characterized by very strong individuals and weak teams.

During the second half of the 60s however, the emperor became increasingly unpopular with the people and the army, leading to several rebellions which ultimately led to his downfall and suicide in 68.

During the ' 60s Lear invented and introduced the 8-track cartridge in competition with the cassette system.

During the 1950s and 60s eastern Iowa was home to the Buffalo Bill Council spanning an area from Dubuque to Muscatine.

During " The Killing Times " of the Covenanters in the 17th century, Margaret McLachlan, an elderly woman in her 60s, and Margaret Wilson, a teenager, were sentenced to be tied to stakes in the tidal channel of the River Bladnoch near its entrance to Wigtown Bay to be drowned by the incoming tide.

During the 1950s and 60s, advertisers sometimes subtly " placed " products into the shows they sponsored.

During the 1950s and ' 60s, psychologists began studying gender development in young children, partially in an effort to understand the origins of homosexuality ( which was viewed as a mental disorder at the time ).

During the 1950s and 60s, when the Western desert campaigns began to be played out all over again in memoirs, biographies and history books, he maintained loyalty to those people in whom he had placed his trust-especially Sir Claude Auchinleck, whose reputation he was always eager to defend.

During the 50s and 60s, it was the golden age of Chanson Française: Dalida, Monique Serf ( Barbara ), Georges Brassens, Léo Ferré, Charles Aznavour, Alain Barrière and Jacques Brel.

During the 60s and 70s it acquired a conservative editorial bent, and came into controversy with campus activists of the time.

During the second half of the 1940s, 1950s and ' 60s Corona and its neighbor, East Elmhurst, was home to legendary African American musicians, civil rights leaders and athletes including Malcolm X aka El-Hajj Malik El-Shabazz, Dr. Ophelia Devore, Dizzy Gillespie, Charlie Shavers, Ella Fitzgerald, jazz vocalist, composer and recording artist Norman Mapp, Nat Adderley, Frankie Lymon,

During the 60s, 70s and 80s, the island became used as a ' Rest and Recuperation ' resort, having several chalet style bungalows built around the NAAFI shop, restaurant and swimming pool complex on South Shore.

During his time in Britain in the 1950s and 60s, he worked first with the Associated British Corporation ( ABC ) before moving across to the BBC in 1962, holding the role of Head of Drama with both organisations.

During the ' 40s, ' 50s and ' 60s, many middle class Jews lived in Crown Heights.

During the 1950s and 60s, the sycamore tree itself was used as Indiana State's mascot.

During the 1950s and 60s, freeway construction and urban renewal projects altered the neighborhood.

During this time Ian Paice was also heavily involved in doing sessions for various artists from the stable of the famous 60s producer Derek Lawrence.

During the 60s, Cardin began a practise that is now commonplace by creating the system of licenses that he was to apply to fashion.

During the 1950s and 60s, many Kayōkyoku groups and singers gained experience performing on US military bases in Japan.

During the 1950s and 60s Goldsmith's involvement in finance was more as a gambler than an industrialist, and brought him several times close to bankruptcy.

During the 60s and 70s Goldsmith had backing by the finance company Slater, Walker, run by Jim Slater.

During the 1950s, ' 60s, and ' 70s there was a lively debate about the theoretical soundness of production functions.