Around 190 AD under the leadership of the scholar Pantanaeus, the school of Alexandria became an important institution of religious learning, where students were taught by scholars such as Athenagoras, Clement, Didymus, and the native Egyptian Origen, who was considered the father of theology and who was also active in the field of commentary and comparative Biblical studies.

Around the 12th century AD, the Sultanate of Ifat was established in Djibouti and northern Somalia, eastern Ethiopia with its capital at Zeila in northern Somalia.

Around AD 600, the Taíno Indians, an Arawak culture, arrived on the island, displacing the previous inhabitants.

Around AD 75, work on the civitas forum and basilica had commenced on the site of the former principia and by the late 2nd century the civitas walls had been completed.

Around 200 AD, ten of the plays of Euripides began to be circulated in a select edition, possibly for use in schools, with some commentaries or scholia recorded in the margins.

Around AD 200, Clement of Alexandria noted that John's gospel was a " spiritual gospel ", distinct from the Synoptics.

Around the late 14th century AD, European powdermakers first began adding liquid during grinding to improve mixing, reduce dust, and with it the risk of explosion.

Around AD 600, the Taíno Indians, an Arawak culture, arrived on the island, displacing the previous inhabitants.

Around 1000 AD, cast bronze horseshoes with nail holes became common in Europe.

Around 230 AD, the Kushans were defeated by the Sassanid Empire and replaced by Sassanid vassals known as the Indo-Sassanids.

Around AD 700 Slavic peoples started coming into the eastern parts of Holstein which had previously been settled by Germanic inhabitants and were then evacuated in the course of the Migration Period.

Around 680 AD the Bulgar group, led by khan Kuber ( who belonged to the same clan as the Danubian Bulgarian khan Asparukh ), settled in the Pelagonian plain, and launched campaigns to the region of Thessaloniki.

Around 278 AD Romans moved their regional capital to Tanger and Volubilis started to lose importance.

Around AD 250, Diophantus created a different form of the Pell equation

Around AD 130 the jurist Salvius Iulianus drafted a standard form of the praetor's edict, which was used by all praetors from that time onwards.

Around AD 400, the dissident group split off from Vulcan society and began the long journey to the planets Romulus and Remus.

Around 400 AD, the dissident group split off from Vulcan society and began the long journey to the planet Romulus.

Around 800 AD, they were replaced by the Igneri people, members of the Arawak group.

Around the 1st century AD, according to Funan epigraphy and the records of Chinese historians ( Coedes ), a number of trading settlements of the South appear to have been organized into several Malay states, among the earliest of which are believed to be Langkasuka and Tambralinga.

Around 700 AD, Tai people who did not come under Chinese influence settled in what is now Dien Bien Phu in modern Vietnam according to the Khun Borom legend.

Around 900 AD, major wars were fought between Chiang Saen and Hariphunchai.

Around 1000 AD, Chiang Saen was destroyed by an earthquake with all the inhabitants killed.

Around 1300 AD a new group appears to have settled in Trinidad and Tobago and introduced new cultural attributes which largely replaced the Guayabitoid culture.

Around AD 550, the Brythonic-speaking bard Taliesin wrote the or " Song of Mead.

Around AD 400, she became head of the Platonist school at Alexandria ,< ref >

Around 1831, when Anne was eleven, she and Emily broke away from Charlotte and Branwell to create and develop their own fantasy world, Gondal.

Around the transition from the 15th to the 16th century, Albrecht Dürer from Nuremberg established his reputation across Europe as painter, printmaker, mathematician, engraver, and theorist when he was still in his twenties and secured his reputation as one of the most important figures of the Northern Renaissance.

Around the year 1000, when the area was under Polish rule, the stronghold became seat of the Diocese of Kołobrzeg.

Around 716, when his abbot Wynberth of Nursling died, he was invited ( or expected ) to assume his position — it is possible that they were related, and the practice of hereditary right in early Anglo-Saxon would affirm this.

Around 2000, the artist's squats movement was exposed in the medias, and quite popular ( as they chose to occupy empty public-owned buildings mainly, at a time when middle-class Parisians could not afford skyrocketing prices for renting a decent flat ).

Around the middle of his career, Edison attributed the hearing impairment to being struck on the ears by a train conductor when his chemical laboratory in a boxcar caught fire and he was thrown off the train in Smiths Creek, Michigan, along with his apparatus and chemicals.

Around July 1, Vega reaches midnight culmination when it crosses the meridian at that time.

Around 1906, Picasso met Matisse through Gertrude Stein, at a time when both artists had recently acquired an interest in primitivism, Iberian sculpture, African art and African tribal masks.

Around 1580, when both the Theatre and the Curtain were full on summer days, the total theatre capacity of London was about 5000 spectators.

Around the same time, Edmund Fournier d ' Albe developed the Optophone, a handheld scanner that when moved across a printed page, produced tones that corresponded to specific letters or characters.

It was not until 1955, when " Rock Around the Clock " was used under the opening credits of the film Blackboard Jungle, that the song truly took off.

Niven enjoyed success in 1956, when he starred as Phileas Fogg in Michael Todd's immensely successful production of Around the World in 80 Days.

Around the time when the compact disc entered the market as a digital-format replacement for analog audio, it became feasible to also begin storing and using video in digital form, and a variety of such technologies began to emerge.

Around 20 droves took place between 1931 and 1959 when the final droving run was completed.

Around the age of twelve, when his father's career was faltering, he was sent to Normandy to be brought up in the household of William de Tancarville, a great magnate and cousin of young William's mother.

Around 1900 the area got an enormous growth of population when a combination of reviving Catholicism and economic recovery caused high birthrates.

Around this time, a ' Stig is Dead ' rumour, prompted by both many obscure clues within the band's songs and album covers ( including a track which, when played backwards, reportedly said ' Stig has been dead for ages, honestly ') and the fact that Stig had not spoken publicly in five years began to circulate, prompting Barry to stay in bed for a year.

Around 1969, when Randy was eighteen, he and Teddy showed up on Jeff's doorstep wanting to play.

Around 1190, Avalon became associated with Glastonbury, when monks at Glastonbury Abbey claimed to have discovered the bones of Arthur and his queen.

Around 1880, when the Texas and Pacific Railway was built, the town was founded as Windmill Town.

Around 1100, further confusion arose when Ratramnus ’ name was mistakenly copied in some works as Bertramus, a mistake which endured even into the 19th century.

Around 200 died here ; more died afterwards, when the Nazis sent the prisoners on death marches in April 1945 fearing the Allied advance.

Around 1454, when Richard began to resent the influence of Edmund Beaufort, 1st Duke of Somerset, Cecily spoke with Queen consort Margaret of Anjou on his behalf.

Around the same time also came his first exposure to jazz, when at age 12 he heard Tommy Dorsey and Harry James's bands on the radio.

Around mid 2004, Intel encountered serious problems in increasing their Pentium 4's clock speed beyond 3. 4 GHz because of the enormous amount of heat generated by the already hot Prescott core processor when working at higher clock speeds.