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 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 the turn of the 4th century, as Memphis was continuing to decline in importance, the Romans established a fortress town along the east bank of the Nile.

Around AD 90, the Romans built a fort there.

Around 275 the Romans could no longer maintain the northern border and Utrecht was abandoned.

Around BC 29, Serdica was conquered by the Romans.

Around the 1st century BC, the territory became subject to the Romans.

Around 40 AD, the first Romans settled on the site.

Around the year 370, Frankish invaders drove out the ruling Romans, who had settle the area around the 2nd century AD.

Around 429, shortly after the Romans had withdrawn from Britain, a Gaulish assembly of bishops chose Germanus and Lupus, Bishop of Troyes, to visit the island.

Around AD 55, the Romans established a legionary fortress at Isca Dumnoniorum, modern Exeter, but west of Exeter the area remained largely un-Romanized.

Around 106 AD Aqaba was one of the main ports for the Romans.

Around AD 75 a fort was built by the Romans during their conquest of Britain.

Around this time, the Romans defeated the Brigantes, a peaceful, farming people.

Around 300 AD, the Romans replaced the wooden compartments with separate, attached ceramic pots that were tied to the outside of an open-framed wheel, thereby creating the noria.

Around 15 BC, the Romans under Emperor Augustus extended their empire to include the Alps and established the province of Noricum.

" Around 370 AD the Romans established a fort as part of the Donau-Iller-Rhine-Limes in Altenburg.

Around 390 BC, the Gallic chieftain Brennus made his own way through the Alps, defeated the Romans in the Battle of the Allia and sacked Rome for several months.

Around 125 BC, the south of France is conquered by the Romans who called this region Provincia Romana (" Roman Province "), which evolved into the name Provence in French.

Around 70 AD, Romans occupied Chester.

Around 500 BC Celtic people came, but were soon driven out by the Romans.

Around 250, one group of Franks penetrated as far as Tarragona in present-day Spain, where they plagued the region for about a decade before they were subdued and expelled by the Romans.

Around 76 AD, the Romans started to build a fortress in Chester.