Though the U. S. federal government has no official language, English is the common language used by the federal government and is considered the de facto language of the United States because of its widespread use.

Though the Balkan allies had fought together against the common enemy, that was not enough to overcome their mutual rivalries.

Though colloquial use of the word Doktor for physician is common.

Though nearly all modern mathematicians consider nonconstructive methods just as sound as constructive ones, Euclid's constructive proofs often supplanted fallacious nonconstructive ones — e. g., some of the Pythagoreans ' proofs that involved irrational numbers, which usually required a statement such as " Find the greatest common measure of ..."

Though such use is not encouraged by the company, the common use of the name as a generic term has put the trademark in jeopardy.

Though primarily a comic figure, Falstaff still embodies a kind of depth common to Shakespeare's tricky comedy.

Though the thorn character ( whose appearance was usually similar to the modern " p ") was most common, the eth could equally be used.

Though representing himself as a spokesman for the common man, he often appeared out of place with real working people.

Though not commonly understood as Gnostic, John has elements in common with Gnosticism.

Though violations may be common in fact, states try to avoid the appearance of having disregarded international obligations.

Though the word indigo has existed in English since the 13th century, it may never have been a common part of the basic color-naming system.

Though the Soviet Union declared itself anti-imperialist, critics argue that it exhibited tendencies common to historic empires.

Though this is the most common manner, there are other ways of attaining the rank.

Though less common, X-ray microscopy has also been developed since the late 1940s.

Though each area of Mesolithic ceramic developed an individual style, common features suggest a single point of origin.

Though he mentions that he does enjoy and recognize what is pleasant, he sees them of no utilization in terms of governing, or of the benefit of common people.

Though still used for historical renovations, and for heavy-duty applications, such as attaching boards to masonry walls, cut nails are much less common today than wire nails.

Though his recovery was reasonably quick, his future career was marred with frequent cancellations due to various health problems, from the common cold to depression, which lasted from days to months.

Though it is difficult to be certain of much of the aspects of Norn grammar, documents indicate that it may have featured subjectless clauses, which were common in the West Scandinavian languages.

Though the Napoleonic code was among the first government acts of modern times to introduce the notion of absolute ownership into statute, protection of personal property rights was present in medieval Islamic law and jurisprudence, and in more feudalist forms in the common law courts of medieval and early modern England.

Though the original rules of Reversi were such that each player was limited to using no more than half of the disks ( those in possession at the start ), this rule has long been out of common practice ; and, if using a physical board and pieces, the player whose turn it is simply retrieves a disk that is in possession of the opponent as needed.

Though steel had been produced by various inefficient methods long before the Renaissance, its use became more common after more efficient production methods were devised in the 17th century.

Though silver alloy urinary catheters cost about $ 6 more than standard urinary catheters, they may be worth the extra cost, since catheter-related infection is a common cause of nosocomial infection and bacteremia.

Though polysaccharides are also biopolymers, it is not so common to talk of ' sequencing ' a polysaccharide, for several reasons.

Though it was published anonymously, the true authorship was quickly discovered and Defoe was arrested.

Though nearly all scholars reject any alternative authorship candidates, including Oxford, popular interest in various authorship theories persists.

Though the Dunciad was first published anonymously in Dublin, its authorship was not in doubt.

Though at first anonymous, its authorship soon became known, with the result that Keble was in 1831 appointed to the Chair of Poetry at Oxford, which he held until 1841.

Though its authorship is attributed to Moses, the oldest manuscript dates to the mid-19th century.

Though published anonymously, the evidence for his authorship of the tract may be found in Gabriel Harvey's Pierce's Supererogation ( written November 1589, published 1593 ), in Nashe's Have with You to Saffron-Walden ( 1596 ), and in various allusions in Lyly's own plays.

Though theories of multiple authorship abounded once, the notion of a single " Fredegar " is common scholarly fare today.

Though it is certain that the poem is a derivative of the Book of Judith, still present in the Roman Catholic Bible, its authorship and year of origin remain a mystery.

Though the dates of authorship for both plays are uncertain, it seems likely that Cupid's Revenge is the earlier work, and that the author or authors of Merlin were influenced by the Beaumont-Fletcher play.

Though the precise date of the Exeter Codex's inscription is still unknown, it may generally be described as one of the great works of the English Benedictine revival of the tenth century, and proposed dates of authorship generally range from 960 to 990.

Though Wulfstan's name is never directly attached to the Sermo Lupi, there is no question of Wulfstan's authorship.

Though at first anonymous, its authorship soon became known, with the result that Keble was in 1831 appointed Oxford Professor of Poetry, a post that he held until 1841.

Though this phrase is often credited to Barnum the actual authorship is unclear.

Though some have attributed authorship to Jameson, this is hotly contested and others see Grant as having written it, as the first significant statement to relate Lamarck's concepts to the geological record of living organisms of the past.

Though there are many exceptions, which we have noted in preceding pages, white wine is as a rule best consumed between two and six years old, and red wines, nowadays, between three and ten.

Though Nobel remained unmarried, his biographers note that he had at least three loves.

Though from vastly different backgrounds, within three months Patrick Brontë and Maria Branwell were married on 29 December 1812.

Though respected for their contributions to various academic disciplines ( respectively mathematics, linguistics, and literature ), the three men became known to the general public only by making often-controversial and disputed pronouncements on politics and public policy that would not be regarded as noteworthy if offered by a medical doctor or skilled tradesman.

Though a minimum of three bishops participating is desirable ( there are usually several more ) in order to demonstrate collegiality, canonically only one bishop is necessary.

Though distinct, the three persons cannot be divided from one another in being or in operation.

Though Chiang lost militarily, the battle dispelled Japanese claims that it could conquer China in three months and demonstrated to the Western powers that the Chinese would continue the fight.

Though Alexander and his successor, John XXIII, gained widespread support, especially at the cost of the Avignon pope, the schism remained, now involving not two but three claimants: Gregory XII at Rome, Benedict XIII at Avignon and John XXIII.

Though the estampie is generally monophonic, there are also two-voice compositions in the form of an estampie, such as the three for keyboard in the Robertsbridge Fragment.

Though the three Synoptic Gospels share a considerable amount of text, over 90 % of John's Gospel is unique to him.

Though there should be three feet of snow

Though his reign ended on a high note, with order largely restored to his empire, it was followed by three years of civil war.

Though the average number of laureates per prize increased substantially during the 20th century, a prize may not be shared among more than three people.

Though the Books of Kings and Books of Chronicles talk a great deal about the Assyrian empire, Nineveh itself is not again noticed till the days of Jonah, when it is described ( ff ; ) as an " exceedingly great city of three days journey in breadth ".

Though estriol is the most plentiful of the three estrogens it is also the weakest, whereas estradiol is the strongest with a potency of approximately 80x that of estriol.

Though unique for each pope, the arms are always surmounted by the two keys in saltire ( i. e., crossed over one another so as to form an X ) behind the escutcheon ( shield ) ( one silver key and one gold key, tied with a red cord ), and above them a silver triregnum with three gold crowns and red infulae ( lappets — two strips of fabric hanging from the back of the triregnum which fall over the neck and shoulders when worn ).

Though several types of Sentinels have been introduced, the typical Sentinel is three stories tall, capable of flight, projects energy blasts, and can detect mutants.

Though the singing was more or less evenly shared among the three men, both Danko and Helm have stated that they saw Manuel as the Band's " lead " singer.

Though the term today is used almost exclusively for ancient warships, modern historians also refer to medieval and early modern galleys with three banks of oars per side as triremes.

Though prominent as a Missouri Senator, Harry Truman had been Vice President only three months when he became President ; he was never informed of Franklin Roosevelt's war or postwar policies while Vice President.

Though Fox's work has now been to some extent revised, it remains a vital record of stretches of the Dyke that still existed between 1926 and 1928, when his three field surveys took place, but that are now destroyed.

Though the etymology of the word ' panettone ' is rather mundane, three more complex and fanciful folk etymologies have arisen.

Though the early literary presentations of Medea are lost, Apollonius of Rhodes, in a redefinition of epic formulas, and Euripides, in a dramatic version for a specifically Athenian audience, each employed the figure of Medea ; Seneca offered yet another tragic Medea, of witchcraft and potions, and Ovid rendered her portrait three times for a sophisticated and sceptical audience in Imperial Rome.

Though interbreeding with other pike species can complicate the classification of some individuals, zoologists usually recognize from zero to three subspecies of muskellunge.