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 his tenure in the Senate, Frye served as President pro tempore ( 54th – 62nd Congress, his resignation shortly before his death spawning a debate over filling the position ) and chairman of the Rules Committee ( 47th – 49th Congress ).

During the early 1940s, Frye alternated between film roles and appearing on stage in a variety of productions ranging from comedies to musicals, as well as appearing in a stage version of Dracula.

During January 2007, the killer attacks again, almost killing Danielle Frye and mistakenly taking Dixie Cooney Martin as his victim in an attempt to kill Babe.

During training camp later that year, Frye injured his wrist and had to undergo surgery.

During training camp, Dorsey and Derek Anderson competed for the 2nd string position behind starter Charlie Frye.

During the summer of 2012, Frye was screened at a regular team physical screening, and learned he had an enlarged heart via dilated cardiomyopathy, sidelining him indefinitely.

During these visits Shelley wrote the poem " Mont Blanc ", Byron wrote " The Prisoner of Chillon " and the dramatic poem Manfred, and Mary Shelley, who found the scenery overwhelming, conceived the idea for the novel Frankenstein in her villa on the shores of Lake Geneva in the midst of a thunderstorm.

During this tour he wrote three new comic operas and he also collaborated with Giacomo Rust on one opera, Il Talismano ( The Talismand ).

During 1976, Grant wrote her first song (" Mountain Man "), performed in public for the first time — at Harpeth Hall School — the all-girls school she attended, recorded a demo tape for her parents with church youth-leader Brown Bannister, then later when Bannister was dubbing a copy of the tape, Chris Christian, the owner of the recording studio, heard the demo and called Word Records.

During the 3rd and 4th centuries many ecclesiastics and monks wrote in Coptic.

During the next eight years, Andersson ( together with Ulvaeus ) wrote music for and produced eight studio albums with ABBA.

During the 1840s Disraeli wrote three political novels collectively known as " the Trilogy "– Sybil, Coningsby, and Tancred.

The effort was sufficiently complete that during the summer of 1973 the Unix kernel for the PDP-11 was rewritten in C. During the 1972 – 73 period there was a need to port to Honeywell 635 and IBM 360 / 370 machines, so Mike Lesk wrote the " portable I / O package " which would become the C " standard I / O " routines.

During the course of the second Labour government, Attlee had become increasingly disillusioned by Ramsay MacDonald, whom he came to regard as vain and incompetent, and later wrote scathingly of him in his autobiography.

During this period he also wrote librettos for opera seria and served for a time as literary director of the San Giovanni Grisostomo, Venice's most distinguished opera house.

During this trip, he further conceived the character of Conan and also wrote the poem " Cimmeria ", much of which echoes specific passages in Plutarch's Lives.

During his time as an honors program undergraduate, Sagan worked in the laboratory of the geneticist H. J. Muller and wrote a thesis on the origins of life with physical chemist H. C. Urey.

During the 1840s, Lyell traveled to the United States and Canada, and wrote two popular travel-and-geology books: Travels in North America ( 1845 ) and A Second Visit to the United States ( 1849 ).

During this time he wrote regular dispatches to his superiors in Florence, many of which have survived and are published in Machiavelli's Collected Works.

During World War II, he worked in an animation department of the United States Army, where he wrote Design for Death, a film that later won the 1947 Academy Award for Documentary Feature.

During this time McLean wrote songs that would appear on his first album, Tapestry.

During his imprisonment he wrote many letters, pleading his innocence.

During his career he wrote poetry, prose, and stage plays ; his last novel was Kenelm Chillingly, which was in course of publication in Blackwood ’ s Magazine at the time of his death in 1873.

During the Azusa Street meetings, according to witnesses who wrote about them, blind, crippled or other sick people would be healed.

During his years in Freiburg, Marcuse wrote a series of essays that explored the possibility of synthesizing Marxism and Heidegger's fundamental ontology, as begun in the latter's work " Being and Time " ( 1927 ).

During the Han dynasty, Zhang Zhongjing, who was mayor of Changsha near the end of the 2nd century AD, wrote a Treatise on Cold Damage, which contains the earliest known reference to the Neijing Suwen.

John Major wrote in his auto-biography that, " During my premiership interest rates fell from 14 % to 6 %; unemployment was at 1. 75 million when I took office, and at 1. 6 million and falling upon my departure ; and the government's annual borrowing rose from £ 0. 5 billion to nearly £ 46 billion at its peak before falling to £ 1 billion ".

During his lifetime, Agricola wrote a number of Italian operas, as well as Lieder, chorale preludes, various other keyboard pieces and church music, especially oratorios and cantatas.

During his years in Cornwall, he wrote long letters to Boulton several times per week.

During the conflict, Nehru wrote two desperate letters to U. S. President John F. Kennedy, requesting 12 squadrons of fighter jets and a modern radar system.