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 90 % of today's Eritreans speak languages ( Tigrinya and Tigre ) that are closely related to the now-extinct Geez language-as do Tigrinya-speakers in northern Ethiopia and Amharic-speakers of Ethiopia, among others.

Around 85 percent of women experience Types I and II, and 15 percent Type III, though Martha Nussbaum writes that Type III nevertheless accounts for 80 – 90 percent of all such procedures in countries such as Sudan, Somalia, and Dijbouti.

Around 90 % of entrepreneurs in the export processing zone ( EPZ ) and in the manufacturing sector were Mauritian nationals, businesspeople had the human capital, education and knowledge needed to exploit market opportunities.

Around 90 % of the passengers on the accident flight were of Dominican descent.

Around 90 % of wastewater produced globally remains untreated, causing widespread water pollution, especially in low-income countries.

Around 90 percent of Sekt is made at least partially from imported wines from Italy, Spain and France.

Around 90, 000 people work in Canary Wharf and it is home to the world or European headquarters of numerous major banks, professional services firms and media organisations including Barclays, Citigroup, Clifford Chance, Credit Suisse, HSBC, J. P. Morgan, KPMG, MetLife, Morgan Stanley, Skadden, State Street and Thomson Reuters.

Around 90 % of the world's production of REE comes from China, and Japan imports 60 % of that.

Around 90 % of wastewater produced globally remains untreated, causing widespread water pollution, especially in low-income countries.

Around 90, 000 people went through it, and 2, 600 of those died there.

Around 90, 000 to 100, 000 people, many of them from neighbouring countries, came to see one of today's most popular bands.

Around 1970, Sultan Rashid Lucman and the Blackshirts belonging to the Top 90 adopted to name their organizations respectively as Banga Moro Liberation Organization ( BMLO ) and the Moro National Liberation Front ( MNLF ), later MILF adopted it too in 1978.

Around 90 young people, between the ages of 13 and 18, attend the group, which meets on Friday nights.

Around 90 % of virgin paper is made from wood pulp.

Around 90 % of the fresh water on the Earth's surface is held in the ice sheet, and, if melted, would cause sea levels to rise by 61. 1 metres.

Around 90 % of the Yellow-eyed Penguin's diet is made up of fish ; with cephalopods such as the arrow squid ( Nototodarus sloanii ) making up the remainder.

Around 90 % of individuals with PCD have ultrastructural defects affecting protein ( s ) in the outer and / or inner dynein arms which give cilia their motility, with roughly 38 % of these defects caused by mutations on two genes, DNAI1 and DNAH5, both of which code for proteins found in the ciliary outer dynein arm.

Around 90 % of the body clears the water before the whale turns to land on its back or side.

( Around 90 CE, Martial circulated his poems in codex form, presenting this as a novelty.

Around 90 species of bird have been recorded as breeding on the reserve, and six species of bat, including the pipistrelle and brown long-eared bat.

Around 90 % of the protein structures available in the Protein Data Bank have been determined by X-ray crystallography.

Around 90 % of people with HIV have never been tested for the disease.

Around the World in 90 Minutes ( plus extra time and penalties ) ( 2007 ) was based on his journey to 13 countries during the four weeks of the 2006 World Cup.

Around 90 % of the properties in the neighbourhood are terraced properties or flats.