By the 1940s, the term commonly was capitalized, Negro, but by the mid 1960s it was considered disparaging.

By the Roman period brass was being deliberately produced from metallic copper and zinc minerals using the cementation process and variations on this method continued until the mid 19th century.

By the mid late 18th century developments in cheaper zinc distillation such as John-Jaques Dony's horizontal furnaces in Belgium and the reduction of tariffs on zinc as well as demand for corrosion resistant high zinc alloys increased the popularity of speltering and as a result cementation was largely abandoned by the mid 19th century.

By the mid 19th century, many boats had been built with iron or steel frames but still planked in wood.

By the mid 1960s, binary addressing had become the standard architecture in most computer designs, and main memory sizes were most commonly powers of two.

" By the mid 2000s, bikinis had become a $ 811 million business annually, according to the NPD Group, a consumer and retail information company.

By the mid 1970s, born again Christians were increasingly referred to in the mainstream media as part of the born again movement.

By the mid 20th century, with the growing market for rare coins, the Sheldon system was adopted by the American Numismatic Association and most coin professionals in the North America.

By cutting transportation costs in half or more it became a large profit center for Albany, New York and New York City as it allowed the cheap transportation of many of the agricultural products grown in the mid west of the United States to the rest of the world.

By the mid 19th century, Edward Frankland, F. A.

By the mid to late 2000s, many disco-influenced songs were hits.

By mid century, the cooperative Christian Churches and the independent Christian Churches were following different paths.

By the mid — 18th century the French chemist Charles François de Cisternay du Fay had discovered two types of static electricity, and that like charges repel each other whilst unlike charges attract.

By the mid 1970s, there were enough media zines being published that adzines existed just to advertise all of the other zines available.

By the mid 19th century, the South, The city of New Orleans in particular, being situated as a key to commerce on the Mississippi River and in the Gulf, had become the largest U. S. city not on the Atlantic seaboard and the fourth largest in the U. S. overall.

By the mid 17th century, numerous small Dutch and Flemish distillers ( some 400 in Amsterdam alone by 1663 ) had popularized the re-distillation of malt spirit or wine with juniper, anise, caraway, coriander, etc., which were sold in pharmacies and used to treat such medical problems as kidney ailments, lumbago, stomach ailments, gallstones, and gout.

By the mid 1890s, the Golden Dawn was well established in Great Britain, with membership rising to over a hundred and including every class of Victorian society.

By the mid 1960s, Viola Spolin's classes were handed over to her protégé, Jo Forsberg, who further developed Spolin's methods into a one-year course, which eventually became The Players Workshop, the first official school of improvisation in the USA.

By the mid 1970s, Sweden experienced a recession that struck especially hard on the industrial sector ; shipyards and manufacturing industries were hard hit, which led to high unemployment in many cities of Scania.

By mid July, the team found themselves only 10 games out of the division lead.

By mid July, North Korean troops overwhelmed the South Korean and allied American units defending South Korea and forced them back to a defensive perimeter in south-east South Korean known as the Pusan Perimeter.

By the mid to late-1970s some parts of the capitalist world, including South Korea, were creating new industries based around computers, electronics, and other advanced technology in contrast to North Korea's Stalinist economy of mining and steel production.

By mid July they had Somoza and the National Guard isolated in Managua.

By the mid 19th century, the industrial revolution had transformed England and had begun in France.

By the 1950s, the development of civil jets grew, beginning with the de Havilland Comet, though the first widely-used passenger jet was the Boeing 707, because it was much more economical than other planes at the time.

By the late 1950s, the once-prosperous port area of downtown Manhattan was occupied by a number of dilapidated shipping piers, casualties of the rise of container shipping which drove sea traffic to Port Elizabeth, New Jersey.

By the 1950s, the television industry had become a serious competition for the movie industry.

By the middle of the decade, some of the 1950s generation of American comedians, such as Jerry Lewis, went into decline, while Peter Sellers found success with international audiences in his first American film The Pink Panther.

" By 1967, critics were suggesting that the programme no longer reflected life in 1960s Britain, but reflected how life was in the 1950s.

By the late 1950s a wave of Japanese machines forced most North American typewriter companies to cease business, but Tramiel instead turned to adding machines.

By the 1950s, Trebbiano ( which is known for its neutral flavours ) made up to 30 % of many mass-market Chiantis.

By the early 1950s the Soviet Union had seized reparations in the form of agricultural and industrial products and demanded further heavy reparation payments.

By the end of the 1950s, Japanese companies and individual investors had begun to return to the Philippines.

By the early 1960s a few sheds, a century of accumulated trash, the scientists ' house from the late 1950s and a solid, short lighthouse-like day beacon built two decades before were the only signs of human habitation on Jarvis.

By the 1950s American conservatives were emphasizing the Judeo-Christian roots of their values.

By the 1950s surviving silent movie comedians could be pressed into service as Keystone Cops regardless of whether they appeared with the troupe authentically.

By the 1950s, MIT no longer merely benefited the industries it had worked so closely with three decades prior, and was much closer to its new patrons, philanthropic foundations and the federal government.

By the 1950s, rice exports had fallen by two thirds and mineral exports by over 96 %.

By studying grassroots activism and the lived experiences of its participants, her high school students came to appreciate how African Americans worked to end Jim Crow laws in the 1950s.

By the 1950s, an era of every woman being able to own her own pearl necklace had begun, and natural pearls were reduced to a small, exclusive niche in the pearl industry.

By the early 1950s the 356 had gained some renown among enthusiasts on both sides of the Atlantic for its aerodynamics, handling, and excellent build quality.

By the late 1950s, the contest exchange was expanded to include band used.

By the late 1950s, new organizations focused on amateur radioteletype started to appear.

By the late 1950s, when other emerging nations across the African Continent were demanding independence, a small group of São Toméans had formed the Movement for the Liberation of São Tomé and Príncipe ( MLSTP ), which eventually established its base in nearby Gabon.

By the end of the 1950s, SAC had identified 20, 000 potential Soviet target sites and had officially designated 3, 560 of those sites as bombing targets, with the significant percentage being counterforce targets of Soviet air defense, airfields and suspected missile sites.

By the late 1950s, as missiles developed both in quality and number, the ability for the US air fleet to penetrate Soviet airspace was increasingly at risk.

By the early 1950s, Toledo annually trailed the other seven Association clubs in attendance, reaching a desperation point in mid-season of 1952.

By the late 1950s it was routine for special-quality small-signal tubes to last for hundreds of thousands of hours, if operated conservatively.

By the 1950s, in the United States, it had become rare for women to go into their wedding nights not knowing what to expect.