During the 9th century peak of the Viking expansion, large fleets set out to attack the degrading Frankish empire by attacking up navigable rivers such as the Seine.

During the Viking age their expeditions, frequently combined raiding and trading, penetrated most of the old Frankish empire, the British Isles, The Baltic, Russia and both Muslim and Christian Iberia.

* Persico, Joseph E. Piercing the Reich: The Penetration of Nazi Germany by American Secret Agents During World War II ( New York: Viking, 1979 )

During this same 10th century and in the first years of the 11th century Viking riders tried to assault it — Galicia is known in the Nordic sagas as Jackobsland or Gallizaland — and bishop Sisenand II, who was killed in battle against them in 968, ordered the construction of a walled fortress to protect the sacred place.

During the period of the reigns from Egbert to Alfred the Great, the kings of Wessex emerged as Bretwalda, unifying the country and eventually forging it into the kingdom of England in the face of Viking invasions.

During the later half of the 18th century the Icelandic Sagas were still used as important historical sources, but the Viking Age was regarded as a barbaric and uncivilised period in the history of the Nordic countries.

During the first 40 years, the raids were conducted by small, mobile Viking groups.

During the Viking Age, Scandinavian men and women travelled to many parts of Europe and beyond, in a cultural diaspora that left its traces from Newfoundland to Byzantium.

During the 18th century, British interest and enthusiasm for Iceland and early Scandinavian culture grew dramatically, expressed in English translations of Old Norse texts, and original poems which extolled the supposed " Viking virtues ".

During his childhood aliens were the target of Viking raids and invasions under Sweyn Forkbeard and his son, Cnut.

During the Viking era, the place was known as Varna ( forne, vorne, front-protection?

During the Viking raids on Lindisfarne, however, this cover was lost, and a replacement was made in 1852.

During the Viking Age ( 800 – 1100 AD ) the area has been estimated to have been populated by 100 people.

During the Viking Age the islands of Öckerö belonged to the Norwegian kings, and the part of the coast was known as Älvsyssel.

During the period of the Viking invasions it would seem that there was a relatively important fortified site ( see the Vita Berlindis ) in Asse.

During the second quarter of the century the frequency and size of raids increased and the first permanent Viking settlements ( called longphorts in Ireland ) appeared.

During the great Viking invasion of England opposed by Alfred the Great and various other Saxon and Welsh rulers, the Viking chieftain Hastein in late summer 893 marched his men to Chester to occupy the ruined Roman fortress there.

During the Viking Age, perhaps following the sack of Dumbarton Rock in 878, Govan is believed to have been one of the major centres of the Kingdom of Strathclyde.

During the Viking Age in northern England, Wayland is depicted in his smithy, surrounded by his tools, at Halton, Lancashire, and fleeing from his royal captor by clinging to a flying bird, on crosses at Leeds, West Yorkshire, and at Sherburn-in-Elmet and Bedale, both in North Yorkshire.

During the battle, Robert had entrapped the Viking commander in a nearby church.

During the Viking era, it was often used for constructing shields.

During the Viking Age, the fortress Nonnebakken ensured its controller supremacy over the river.

During the early-to-mid-1950s, BEA leased in aircraft that were bigger than its Tempelhof-based fleet of DC-3 / Pionair, Viking and Elizabethan piston-engined airliners from other operators to boost capacity, following a steady increase in the airline's passenger loads.

During the Late Bronze Age circa 2000 BC, they created an empire, the Hittite New Kingdom, which reached its height in the 14th century BC, controlling much of Asia Minor.

During the Age of Enlightenment, theologians and philosophers presented various philosophies and beliefs.

During the past few centuries of detailed, scientific study of the Bronze Age, it has become clear that on the whole, the use of copper or bronze was only the most stable and therefore the most diagnostic part of a cluster of features marking the period.

During the Cenozoic, mammals proliferated from a few small, simple, generalized forms into a diverse collection of terrestrial, marine, and flying animals, giving this period its other name, the Age of Mammals, despite the fact that birds still outnumbered mammals two to one.

During the Gunpowder Age, armored cavalry become obsolete.

During the late Neolithic henge sites were constructed, single burials began to become more commonplace and by the Bronze Age it is possible that even where chambered cairns were still being built they had become the burial places of prominent individuals rather than of communities as a whole.

During the Renaissance Age the dagger was used as part of everyday dress, and daggers were the only weapon commoners were allowed to carry on their person.

During Japanese cinema's ' Golden Age ' of the 1950s, successful films included Rashomon ( 1950 ), Seven Samurai ( 1954 ) and The Hidden Fortress ( 1958 ) by Akira Kurosawa, as well as Yasujirō Ozu's Tokyo Story ( 1953 ) and Ishirō Honda's Godzilla ( 1954 ).

During Indian cinema's ' Golden Age ' of the 1950s, it was producing 200 films annually, while Indian independent films gained greater recognition through international film festivals.

During the Information Age ( circa 1971 – 1991 ), the Knowledge Age ( circa 1991 to 2002 ), and the Intangible Economy ( 2002 – present ) many see the primary factors of production as having become less concrete.

During what is often referred to as the Islamic Golden Age, in order for a scholar to be qualified to issue a fatwā, it was required that he obtained an ijazat attadris wa ' l-ifta (" license to teach and issue legal opinions ") from a Madrassah in the medieval Islamic legal education system, which was developed by the 9th century during the formation of the Madh ' hab legal schools.

During the Bronze Age, several artifacts from tumulus burials have been unearthed in central and southern Albania, showing close connection with sites in southwestern Macedonia and Lefkada, Greece.

During the Iron Age, the best tools and weapons were made from steel, particularly alloys which were produced with a carbon content between approximately 0. 30 % and 1. 2 % by weight.

During the early Iron Age Brythonic culture held sway, there being no evidence that the Roman occupation of southern Scotland extended to these islands.

During the Islamic Golden Age, there was a logical debate among Islamic philosophers and jurists whether the term Qiyas refers to analogical reasoning, inductive reasoning or categorical syllogism.

During his tenure at Harvard, he was, among many other things, an early student of the effect of the last Ice Age on North America.

During prehistoric times there was a succession of cultures that flourished in the land of present-day Moldova from the end of the Ice age up through the Neolithic Age, the Copper Age, the Bronze Age, and the beginning of the Iron Age, when historical records begin to be made about the people who lived in these lands.

During the Zemene Mesafint or " Age of Princes " of Ethiopia, Emperors became figureheads, controlled by warlords like Ras Mikael Sehul of Tigray, and by the Oromo Yejju dynasty, which later led to 17th century Oromo rule of Gondar, changing the language of the court from Amharic to Afaan Oromo.

During what is known as the Little Ice Age, Innocent VIII, in his papal bull Summis desiderantes ( 5 December 1484 ) instigated severe measures against magicians and witches in Germany.

During the Age of the Ajuuraan, the Somali sultanates and republics of Merca, Mogadishu, Barawa, Hobyo and their respective ports flourished, enjoying a lucrative foreign commerce with ships sailing to and coming from Arabia, India, Venetia, Persia, Egypt, Portugal and as far away as China.