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 the 1950s and 60s, Afghanistan was able to use the Russian and American need for allies during the Cold War as a way to receive economic assistance from both countries.

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 Brown trial, however, the state's most powerful Democratic newspaper, the Providence Daily Post, stated that Brown was a murderer, a man of blood, and that he and his associates, with the assistance of Republicans and Abolitionists, had plotted not only the liberation of the slaves but also the overthrow of state and federal governments.

During the latter days of November to the day of Brown's execution, it seems that most Rhode Islanders did not concur in `` E. B.'s '' suggestion.

During this time most of what is known as ethnologie was restricted to museums, such as the Musée de l ' Homme founded by Paul Rivet, and anthropology had a close relationship with studies of folklore.

During his five years as an assistant director, Kurosawa worked under numerous directors, but by far the most important figure in his development was Kajiro Yamamoto.

During this period the region along with most of Eastern Australia was part of the ocean floor ; formations from this period include the Black Mountain Sandstone formation and the Pittman Formation consisting largely of quartz-rich sandstone, siltstone and shale.

During the period which intervened between commencing operations at Possagno and his decease, he executed or finished some of his most striking works.

During most of his tenure with Capp, Frazetta's primary responsibility — along with various specialty art, such as a series of Li ' l Abner greeting cards — was tight-penciling the Sunday pages from studio roughs.

During the end of the 9th century, the Samanids extended its rule from Bukhara to as far south as the Indus River and west into most of Persia.

During the end of the 9th century, the Samanids extended its rule from Bukhara to as far south as the Indus River and west into most of Persia.

During their heyday from the late 1970s to the mid-1990s, most BBSes were run as a hobby free of charge by the system operator ( or " SysOp "), while other BBSes charged their users a subscription fee for access, or were operated by a business as a means of supporting their customers.

During the late 1980s and early 1990s, most BBSes used ANSI to make elaborate welcome screens, and colorized menus, and thus, ANSI support was a sought-after feature in terminal client programs.

During the Ottoman period, Bursa continued to be the source of most royal silk products.

During a 1935 – 1942 colonization attempt, the island was most likely on Hawaii time, which was then 10. 5 hours behind UTC .< ref > Since it is uninhabited the island's time zone is unspecified, but it lies within a nautical time zone 12 hours behind UTC.

During the first 10 years of Lukashenko's presidency, most of the Belarusian media outlets ( newspapers, radio, television ) were brought under the control of the state.

During World War II, through February 1945, when Turkey was neutral for most of the length of the conflict, the Dardanelles were closed to the ships of the belligerent nations.

During the Second World War, Bletchley Park was the site of the United Kingdom's main decryption establishment, the Government Code and Cypher School ( GC & CS ), where ciphers and codes of several Axis countries were decrypted, most importantly the ciphers generated by the German Enigma and Lorenz machines.

During their most productive years, the Orioles saw three of its players named MVP: ( Frank Robinson in 1966 ; Boog Powell in 1970 ; and Cal Ripken, Jr. in 1983 ).

During conjugation the donor cell provides a conjugative or mobilizable genetic element that is most often a plasmid or transposon.

During most of its existence, the cabal ( sometimes capitalized ) steadfastly denied its own existence ; those involved would often respond " There is no Cabal " ( sometimes abbreviated as " TINC "), whenever the existence or activities of the group were speculated on in public.

During the past few centuries of detailed, scientific study of the Bronze Age, it has become clear that on the whole, the use of copper or bronze was only the most stable and therefore the most diagnostic part of a cluster of features marking the period.

During the post-Roman centuries of Germanic migration and settlement, the region afterwards included in the Diocese of Bamberg was inhabited for the most part by Slavs.

During the Middle Ages, most of the remainder of Europe was Christianized, with Christians also being a sometimes large religious minority in the Middle East, North Africa, Ethiopia and parts of India.

During Charles Darwin's studies on the Galápagos Islands, Darwin observed 13 species of finches that are closely related and differ most markedly in the shape of their beaks.