By the 1920s, each state in the United States had passed public laws that stipulated a certain day to be Arbor Day or Arbor and Bird Day observance.

By the late 1920s Potter and her Hill Top farm manager Tom Storey had made a name for their prize-winning Herdwick flock.

By the 1920s, composers of Tin Pan Alley and Broadway used ballad to signify a slow, sentimental tune or love song, often written in a fairly standardized form ( see below ).

By the late 1920s, New York writers other than Fitz Gerald were starting to use " Big Apple " and were using it outside of a horse-racing context.

By the 1920s, the emerging middle and working classes were powerful enough to elect a reformist president, Arturo Alessandri Palma.

By the 1920s, many newspapers had a comics page on which many strips were collected together.

Additional milieu were provided by Chaosium with the release of Dreamlands, a boxed supplement containing additional rules needed for playing within the Lovecraft Dreamlands, a large map and a scenario booklet, and Cthulhu By Gaslight, another boxed set which moved the action from the 1920s to the 1890s.

By the early 1920s, unit operations became an important aspect of chemical engineering at MIT and other US universities, as well as at Imperial College London.

By the late 1920s, Al Capone and the Mob were inspiring not only fear, but piquing mainstream curiosity about the American underworld.

By the 1920s, the U. S. reached what is still its era of greatest-ever output, producing an average of 800 feature films annually, or 82 % of the global total ( Eyman, 1997 ).

By the 1920s Lewis Fry Richardson's interest in weather prediction led him to propose human computers and numerical analysis to model the weather ; to this day, the most powerful computers on Earth are needed to adequately model its weather using the Navier – Stokes equations.

By the 1920s, the idea of an Israelite conquest of Canaan-the story of the book of Joshua-was not supported by the archaeological record.

By the 1920s, Hearst, was the owner of a chain of newspapers from coast to coast.

By the 1920s, the diatonic harmonica had largely reached its modern form.

By the 1920s the number of cars had soared to 60, 000.

By the early 1920s, however, the inherent limitations of this type of engine had rendered it obsolete, with the power output increasingly going into overcoming the air-resistance of the spinning engine itself.

By the 1920s psychoanalysts assumed that homosexuality was pathological and that attempts to treat it were appropriate, although psychoanalytic opinion about changing homosexuality was largely pessimistic.

By the late 1920s the resistance movement against colonial rule had gathered widespread support during the mistreatment of the Samoan people by the New Zealand administration.

By the late 1920s, however, those employing only optical and electronic technologies were being explored.

By the late 1920s, economic performance had stabilised, but the overall situation was disappointing, for Britain had clearly fallen behind the United States and other countries as an industrial power.

By the 1920s, however, this boisterous folksiness had diminished.

By the end of the 1920s Corbusier was already an internationally known architect.

By the 1920s, the British Government were seeking a replacement for their book code systems, which had been shown to be insecure, and which proved to be slow and awkward to use in practice.

" By the 1920s, Birmingham was the 19th largest city in the U. S and held more than 30 % of the population of the state.

By the time they reach that age, however, Aristotle no longer worries about the evil influence of comedies.

By reminding ourselves of these factors in the situation, we should, I am sure, come to a fresh realization, however painful it be, that the battle between Parker and his neighbors was fought in earnest.

By 1994, however, the Armenian Government had launched an ambitious IMF-sponsored economic liberalization program that resulted in positive growth rates in 1995-2005.

By 1994, however, the Armenian Government had launched an ambitious IMF-sponsored economic program that has resulted in positive growth rates in 1995-99.

By the 1990s, however, mentalité history had become interdisciplinary to the point of fragmentation, but still lacked a solid theoretical basis.

By age three, however, her mother changed her name to Elizabeth Sewall Alcott, after her own mother.

By the mid-4th century however the assembly's judicial functions were largely curtailed, though it always kept a role in the initiation of various kinds of political trial.

By this time Naples seems to have become tired of his music ; the Romans, however, appreciated it better, and it was at the Teatro Capranica in Rome that he produced some of his finest operas ( Telemaco, 1718 ; Marco Attilio Regolò, 1719 ; La Griselda, 1721 ), as well as some noble specimens of church music, including a mass for chorus and orchestra, composed in honor of Saint Cecilia for Cardinal Acquaviva in 1721.

By 1987, however, the USSR withdrew its opposition, concluding the SDI posed no threat.

By 1902, however, due to the Governor of ` Akka being supportive of ` Abdu ' l-Bahá, the situation was greatly eased ; while pilgrims were able to once again visit ` Abdu ' l-Bahá, he was confined to the city.

" By 1923 however, Gropius was no longer evoking images of soaring Romanesque cathedrals and the craft-driven aesthetic of the " Völkisch movement ", instead declaring " we want an architecture adapted to our world of machines, radios and fast cars.

By the mid-1990s, however, companies were beginning to ask what the return was on the investment they had made in this loosely controlled PC software buying spree.

By 1972, however, with only a minimum of work done on the I-95 right of way and none on the potentially massively disruptive Inner Belt, Governor Francis Sargent put a moratorium on highway construction within the MA-128 corridor, except for a short stretch of Interstate 93.

By now the rebel forces were said to have numbered 230, 000, however, this number should be treated with scepticism — Dio's account is known only from a late epitome, and ancient sources commonly exaggerate enemy numbers.

By the early 2000s ( decade ), however, the university quietly reexamined its position on accreditation as degree mills proliferated and various government bureaucracies, such as law enforcement agencies, began excluding BJU graduates on the grounds that the university did not appear on appropriate federal lists.

By 1967, however, Frei encountered increasing opposition from leftists, who charged that his reforms were inadequate, and from conservatives, who found them excessive.

By the late Bronze Age, however, a series of treaties had established safe passage for merchants around the Eastern Mediterranean, spreading from Minoan Crete and Mycenae in the northwest to Elam and Bahrain in the southeast.

By the fourth century, however, " confessors "— people who had confessed their faith not by dying but by word and life — began to be venerated publicly.

By the late 1870s, however, croquet had been eclipsed by another fashionable game, tennis, and many of the newly-created croquet clubs, including the All England club at Wimbledon, converted some or all of their lawns into tennis courts.

By this time, however, many CBM users had shifted their attention to the 16 / 32-bit Amiga, and the 1581 was mostly sold to remaining GEOS users.

By the mid-19th century, however, the powerful British Empire gave up mercantilism and trade restrictions and introduced the principle of free trade, with few restrictions or tariffs.

By the recent turn of the century, however, his paintings were selling for millions.

By December 1981, however, the U. S. had already begun to support armed opponents of the Sandinista regime.

By 1943 however, large numbers of fleet and light carriers became available, which required larger formations of three or four carriers.

By March 1963 however, after the visit of Colonel Michael Greene of the United States Army, and the resulting ' Greene Plan ,' the pattern of bilaterally agreed military assistance to various Congolese military components, instead of a single unified effort, was already taking shape.