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 post-World War I period ski-lifts were built in Swiss and Austrian towns to accommodate winter visitors, but summer tourism continued to be important ; by the mid-20th century the popularity of downhill skiing increased greatly as it became more accessible and in the 1970s several new villages were built in France devoted almost exclusively to skiing, such a Les Menuires.

During the last twenty years of his life Alexios lost much of his popularity.

During the 19th and 20th centuries, coin collecting increased further in popularity.

During this period of decline in disco's popularity, several record companies folded, were reorganized, or were sold.

During World War I the dachshunds ' popularity in the United States plummeted because of this association and there are even anecdotes such as a Dachshund being stoned to death on the high street of Berkhamsted, England at this time because of its association with the enemy.

During the early 1990s, the Compact Disc surpassed the gramophone record in popularity, but gramophone records continued to be made ( although in very limited quantities ) into the 21st century — particularly for club DJs and for local acts recording on small regional labels.

During the time of Nazi Germany ( 1933 – 1945 ), the Nazi Party enjoyed particular popularity and support among the town's population.

During the immediate post-war years the cinematic industry was also threatened by television, and the increasing popularity of the medium meant that some film theatres would bankrupt and close.

During the 1980s, anime gained in popularity, with new animated movies released every summer and winter, often based upon popular anime television series.

During the 1920s and 1930s, Aimee Semple McPherson was a controversial faith healer of growing popularity during the Great Depression.

During the show's peak in popularity, Hee Haw often competed in syndication against The Lawrence Welk Show, a long-running ABC program which had also been canceled in 1971, also in an attempt to purge the networks of older demographic-leaning programs.

During the first decade of the new century, hedge funds regained popularity worldwide and in 2008, the worldwide industry held US $ 1. 93 trillion in assets under management.

During the 2006 Israel-Lebanon conflict, the Iranian government enjoyed something of a resurgence in popularity amongst the predominantly Sunni " Arab street ," due to its support for Hezbollah and to President Mahmoud Ahmadinejad's vehement opposition to the United States and his call that Israel shall vanish.

During the 1940s, English knitting rose in popularity while Continental knitting fell.

During this time it was sometimes said that MUD stands for " Multi Undergraduate Destroyer " due to their popularity among college students and the amount of time devoted to them.

During his time with the club, Beckham's popularity across Asia was integral to the club's commercial success in that part of the world.

During the Counter Reformation and Baroque periods ( late 16th and 17th centuries ), the cult of Mary Magdalene saw a great, new popularity as the Catholic Church publicized her as an attractive, persusasive model of repentance and reform, in keeping with the goals of the reform Council of Trent ( 1545 – 63 ).

During the height of its popularity, the website was receiving over 6 million hits per month.

During this period, the portrayal of opium in literature became squalid and violent, British opium trade was largely supplanted by domestic Chinese production, purified morphine and heroin became widely available for injection, and patent medicines containing opiates reached a peak of popularity.

During this time of popularity, users called opium " God's Own Medicine.

During the Great Depression, Pepsi gained popularity following the introduction in 1936 of a 12-ounce bottle.

During the early 2000s, and with the increasing popularity of Web 2. 0, new ways to filter the software became available.

During the first decade of the 20th century, some songs under the name of samba were recorded, but these recordings did not achieve great popularity.

During the mid to late 1980s this was the dominant 10 Mbit / s Ethernet standard, but due to the immense demand for high speed networking, the low cost of Category 5 Ethernet cable, and the popularity of 802. 11 wireless networks, both 10BASE2 and 10BASE5 have become increasingly obsolete, but still exist in some locations.