By the crusader period, a cistern under the former basilica was rumoured to have been the location that Helena had found the True Cross, and began to be venerated as such ; although the cistern later became the Chapel of the Invention of the Cross, there is no evidence for the rumour prior to the 11th century, and modern archaeological investigation has now dated the cistern to the 11th century repairs by Monomachos.

By the 11th century, Italian monks were flavoring crudely distilled spirits with juniper berries.

By the late 11th century, the Islamic Sayfawa ( Saifawa ) dynasty was founded by Humai ( Hummay ) ibn Salamna.

By the 11th century, particularly during the reign of Yaroslav the Wise, Kievan Rus ' displayed an economy and achievements in architecture and literature superior to those that then existed in the western part of the continent.

By at least the 11th century BC the island was ruled by a kingdom / chiefdom, and the subsequent transition to aristocratic ( or possibly tyrannic ) rule occurred sometime over the next four centuries.

By the turn from the 10th to the 11th century, the smaller burghs in the Parseta area were given up.

By the 11th century, clear glass mirrors were being produced in Moorish Spain.

By the 11th century some Hausa states-such as Kano, Jigawa, Katsina, and Gobir-had developed into walled towns engaging in trade, servicing caravans, and the manufacture of various goods.

By the 11th century, playing cards could be found throughout the Asian continent.

By the 11th and 12th century, the nomadic confederacy of the Cumans and ( Eastern ) Kipchaks ( who are considered to be either the eastern branch of the Cumans or a distinct but related tribe with whom the Cumans created a confederacy ) were the dominant force over the vast territories stretching from the present-day Kazakhstan, southern Russia, Ukraine, to southern Moldavia and western Wallachia.

By the 11th century, the area of today's Transylvania became a largely autonomous part of the Kingdom of Hungary.

By the 11th century BC, the authority of the New Kingdom dynasties had diminished, allowing divided rule in Egypt, and ending Egyptian control of Kush.

By the 11th and 12th centuries, European fighting ships were built with raised platforms fore and aft, from which archers could shoot down into the relatively low longships.

By the 11th and 12th centuries a more advanced society was beginning to emerge.

By the end of the 11th century, the city had spread across the Darro to reach the hill of the future Alhambra, and included the Albayzín ( also Albaicín or El Albaicín ) neighborhood ( a world heritage site ).

By the 1997 – 98 season, Fox had 3 shows in the Nielsen Top 20, The X-Files which ranked 11th, King of the Hill which ranked 15th, and The Simpsons which ranked 17th.

By calculating the area under the relevant portion of the graph for 50 trials, the archaeologist can say that there is practically no chance the site was inhabited in the 11th and 12th centuries, about 1 % chance that it was inhabited during the 13th century, 63 % chance during the 14th century and 36 % during the 15th century.

By the 11th century, the table fork had made its way to Italy.

By the middle of the 11th century, the Norwegian kingdom was firmly established, although there was still only a very rudimentary administrative framework.

By the middle of the 11th century, the Norwegian kingdom was firmly established, although there was still only a very rudimentary administrative framework.

By the late 11th century, the founding elite became obsolete while political partisanship and factionalism at court undermined the marriage strategies of the professional elite, which dissolved as a distinguishable social group and was replaced by a multitude of gentry families.

By the 11th century, East Slavs assimilated the Uralic tribes Merya and Muroma, and the Baltic tribe Eastern Galindae that inhabited the same area ( now Central Russia ).

By the 11th or 12th centuries, a new Arabic translation directly based upon the Samaritan Pentateuch had appeared in Nablus.

By the end of the nineteenth century, in 1893, when the Big Three, Columbia, and Penn were populous centers of learning, Dartmouth graduated only sixty-nine.

By the end of the century the Roman Catholic Church was beginning to make itself felt, mainly through such institutions as hospitals but also through its attitude towards organized labour.

By the 27th century BC Egyptian writing had a set of some 24 hieroglyphs which are called uniliterals, to represent syllables that begin with a single consonant of their language, plus a vowel ( or no vowel ) to be supplied by the native speaker.

By the tenth century two other forms can be distinguished namely Canaanite and Aramaic.

By the end of the 14th century, most of Anatolia was controlled by various Anatolian beyliks.

By the 6th century BC, the Celtic La Tène culture was well established.

By the mid-19th century scientists began to arrive en masse to study the geology and ecology of the region.

By the late 5th century BC, philosophers might separate Aphrodite into two separate goddesses, not individuated in cult: Aphrodite Ourania, born from the sea foam after Cronus castrated Uranus, and Aphrodite Pandemos, the common Aphrodite " of all the folk ," born from Zeus and Dione.

By the beginning of the 8th century, these kingdoms had either been conquered by Nicene neighbors ( Ostrogoths, Vandals, Burgundians ) or their rulers had accepted Nicene Christianity ( Visigoths, Lombards ).

By the middle of the 19th century, industrialisation swept away most of the city's medieval rules of production and commerce, although the entirely corrupt remains of the city's mediæval constitution was kept in place ( compare the famous remarks of Georg Forster in his Ansichten vom Niederrhein ) until 1801, when Aachen became the " chef-lieu du département de la Roer " in Napoléon's First French Empire.

By the 6th century Alexander's commentaries on Aristotle were considered so useful that he was referred to as " the commentator " ().

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 the mid-16th century, they were in common use in most of Europe.

By the standards of 19th century tycoons, Carnegie was not a particularly ruthless man but a humanitarian with enough acquisitiveness to go in the ruthless pursuit of money ; on the other hand, the contrast between his life and the lives of many of his own workers and of the poor, in general, was stark.

By the 7th century BC, much of the Assyrian population used Akkadian influenced Eastern Aramaic and not Akkadian itself.

By the 4th century AD artists had started debating in writing over the proper goals of art as well.

By the end of the twentieth century " Negro " had come to be considered inappropriate and was rarely used and perceived as a pejorative.

By the early 5th century Britain had been Roman for over three hundred and fifty years.

By the 1st century BC, Aediles were elected in July, and took office on the first day in January.

By the 16th century, a cappella polyphony had further developed, but gradually, the cantata began to take the place of a cappella forms.

By the 19th century orchestral music in Europe had standardized the string section into the following homogeneous instrumental groups: first violins, second violins, violas, cellos, and double basses.

By the 3rd century BC, the rival armies of Carthage and Rome began to invade and fight for control of the Iberian Peninsula.

By the 5th century AD, Rome was in decline and the Roman predecessor town of Alicante, known as Lucentum ( Latin ), was more or less under the control of the Visigothic warlord Theudimer.

By the end of the 18th century there were no factories or mills and only a few small cottage industries along the border with Zurich.

By the beginning of the twentieth century, Steiner's interests turned to explicitly spiritual areas of research.