By the 1820s, a national network was in existence.

By the 1820s, the center of innovation had shifted to Paris, where the Pleyel firm manufactured pianos used by Frédéric Chopin and the Érard firm manufactured those used by Franz Liszt.

By the early 1820s, the growing territory reached the minimum population threshold of 60, 000 to qualify for statehood.

By the end of the 1820s, along with a general economic recovery, many of these repressive laws were repealed and in 1828 new legislation guaranteed the civil rights of religious dissenters.

By the 1820s and 1830s, well-known liberals like Thomas Wakley and other radical editors of The Lancet were using Paley's aging examples to attack the establishment's control over medical and scientific education in Durham, London, Oxford and Cambridge.

By the 1820s, the term Pilgrims was becoming more common.

By the 1820s, the Hudson ’ s Bay Company had established a lucrative fur trade in the region.

By the time the Mountain Men began to arrive in the late 1820s and settlers began to arrive again in the 1860s the people of the Cornville area were a mixed community of Apache ( Dil-ze ' e ) and Yavapai ( Wipukepaya ), though the Apache are thought to have been more numerous on the east side of the Verde River.

By the early 1820s, Mexico had gained independence from Spain, and shortly afterward California allied itself with Mexico.

By the 1820s, the French name had become Small Fort River in English and the settlement was known as Little Fort.

By the late 1820s, the Village of Fairport, located within the town on the Erie Canal, was becoming a booming canal town.

By the 1820s, large numbers of Jewish German women had intermarried with Christian German men and had converted to Christianity.

By the 1820s he was constantly in financial difficulties.

" By the late 1820s, prompted the Niitsitapiksi, and in particular the Piikani, whose territory was rich in beaver, temporarily put aside cultural prohibitions and environmental constraints to trap enormous numbers of these animals and, in turn, receive greater quantities of trade items ".

In the 1820s the pits became incorporated as Russell's Colliery, which then became The Wallsend and Hebburn Coal Company Ltd. By 1924 the colliery employed 2183 people.

By the 1820s, the Potomac River had become silted up and was not navigable up to Georgetown.

By the late 1820s he was able to authorise the construction of new and larger classes of ship, matching those in France and the United States.

By the 1820s, as the historian Greg O ' Brien notes, the Choctaw called such mixed-race children itibapishi toba ( to become a brother or sister ), which emphasized the connection to Choctaw, or issish iklanna ( half-blood ), which seemed to imitate Euro-American concepts.

By the 1820s, horse racing was well established on land in Maghull.

By the 1820s, Talma was established as " the dominant personality at the Comédie-Française, where he alone could still successfully impose classical tragedy upon the public ".

By the 1820s they were no more than a group of heavily armed thugs rebelling at even minor military changes.

By the 1820s the settlement had spread to the ' Clarence Plains ', but the area remained primarily agricultural until the mid to late 20th century, when it experienced a residential development boom.

By the 1820s, trappers from the Hudson's Bay Company were the first non-Native Americans to use the route of the future Pacific Highway to move between today's Washington State and " Alta California.

By the 1810s, gores began to be used in skirts again, and skirts grew wider in the 1820s.

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

By 1700, approximately 20 percent of Berlin's residents were French, and their cultural influence on the city was immense.

By 1931, the National Socialist German Workers ' Party was starting to gain influence and control in German politics.

By contrast, in ceremonial monarchies, the monarch holds little actual power or direct political influence.

By far the most visible and obvious power of many modern central banks is to influence market interest rates ; contrary to popular belief, they rarely " set " rates to a fixed number.

By demanding that leaders of the Church be a one woman man, Paul excluded remarried widowers from having influence.

By the 18th century, however, Geneva had come under the influence of Catholic France, which cultivated the city elite, who tended to be at odds with the ordinary townsfolk – to the point that an abortive revolution took place in 1782.

By then, the emperors had lost their influence in Italy and Burgundy.

By the eastward settlement the Empire's influence increased to eventually include Pomerania and Silesia – also due to intermarriage of the local, still mostly Slavic, rulers with German spouses.

By the influence of William Russell, earl of Bedford, he was appointed one of the king's itinerant preachers in Lancashire, and after living for a time in Garstang, he was selected by the Lady Margaret Hoghton as vicar of Preston.

By the end of the 15th century was widely professed and taught in many theological faculties, but such was the influence of the Dominicans, and the weight of the arguments of Thomas Aquinas ( who had been canonised in 1323 and declared " Doctor Angelicus " of the Church in 1567 ) that the Council of Trent ( 1545 – 63 )— which might have been expected to affirm the doctrine — instead declined to take a position.

By the end of World War II, a handful of Cambodians had joined its ranks, but their influence on the Indochinese communist movement and on developments within Cambodia was negligible.

By changing the balance it is possible to influence the anisotropy of the etching, since the chemical part is isotropic and the physical part highly anisotropic the combination can form sidewalls that have shapes from rounded to vertical.

By about 250 BC, the Parthian dynasty brought the Persian Gulf under their control and extended their influence as far as Oman.

By this time, however, Panama ’ s importance and influence had become insignificant as Spain ’ s power dwindled in Europe and advances in navigation technique increasingly permitted to round Cape Horn in order to reach the Pacific.

By the 1920s however the Senate had lost much of its original influence, and hence no sitting senator had been known to have serious aspirations of becoming prime minister whilst remaining in the Senate.

By being translated as well as imitated, Plautus was a major influence on comedy of the Elizabethan era.

By coming down solidly on the side of Spanish interests, in part because Gregory XIV was elected due to the influence of the Spanish cardinals, the recent papal policy of trying to maintain a balance between Spain and France was abandoned.

By the 17th century the influence of Renaissance painting resulted in Russian icons becoming slightly more realistic, while still following most of the old icon painting canons, as seen in the works of Bogdan Saltanov, Simon Ushakov, Gury Nikitin, Karp Zolotaryov and other Russian artists of the era.

By the early 20th century, interest in reincarnation had been introduced into the nascent discipline of psychology, largely due to the influence of William James, who raised aspects of the philosophy of mind, comparative religion, the psychology of religious experience and the nature of empiricism.

By Powell's own account, Ingram was a major influence on him.

By this time however, the influence of Slobodan Milošević was confined to Serbia only as Montenegro had experienced internal regime change in 1996 when former Milošević ally Milo Đukanović reversed his policies, showed resilience by becoming leader of his party and subsequently dismissing former Montenegrin leader Momir Bulatović, a man who remained loyal to Milošević.

By 1871 he had met and befriended most of the major Pre-Raphaelite painters and it was in part due to their influence that the artist brightened his palette, varied his hues, and lightened his brushwork.

By 1970 the DGI had managed to train hundreds of Sandinista guerrilla leaders and had vast influence over the organization.