Birka (Birca in medieval sources), on the island of Björkö (lit. "Birch Island") in present-day Sweden, was an important Viking Age trading center which handled goods from Scandinavia as well as many parts of Continental Europe and the Orient. Björkö is located in Lake Mälaren, 30 kilometers west of contemporary Stockholm, in the municipality of Ekerö.

Birka was founded around AD 750 and it flourished for more than 200 years. It was abandoned c. AD 975, around the same time Sigtuna was founded as a Christian town some 35 km to the northeast. It has been estimated that the population in Viking Age Birka was between 500 and 1000 people.

The archaeological sites of Birka and Hovgården, on the neighbouring island of Adelsö, make up an archaeological complex which illustrates the elaborate trading networks of Viking Scandinavia and their influence on the subsequent history of Europe. Generally regarded as Sweden's oldest town,2006 Encyclopædia Britannica, article "Sweden". Birka (along with Hovgården) has been a UNESCO World Heritage Site since 1993. Many burial sites have been uncovered at Birka, leading to the finding of many objects including jewelry and many textile fragments. In recent years, objects from Birka have been in the public eye due to ongoing academic research connecting Birka to evidence of trade with the Middle East.

History

Birka was founded around 750 AD as a trading port by a king or merchants trying to control trade. It is one of the earliest urban settlements in Scandinavia. Birka was the Baltic link in the Dnieper Trade Route through Ladoga (Aldeigja) and Novgorod (Holmsgard) to the Byzantine Empire and the Abbasid Caliphate.2006 Encyclopædia Britannica. Article "Birca". Birka is the site of the first known Christian congregation in Sweden, founded in 831 by Saint Ansgar.

As a trading center, Birka most likely offered furs, iron goods, and craft products, in exchange for various materials from much of Europe and Western Asia. Furs were obtained from the Sami people, the Finns, and people in Northwestern Russia, as well as from local trappers. Furs included bear, fox, marten, otter, beaver, and other species. Reindeer antlers and objects carved from reindeer antlers like combs were important items of trade. The trade of walrus tusks, amber, and honey is also documented.

Foreign goods found from the graves of Birka include glass and metalware, pottery from the Rhineland, clothing and textiles including Chinese silk, Byzantine embroidery with extremely fine gold thread, brocades with gold passementerie, and plaited cords of high quality. From the ninth century onwards coins minted at Haithabu in Northern Germany and elsewhere in Scandinavia start to appear. However, the vast majority of the coins found at Birka are silver dirhams from the Middle East while English and Carolingian coins are rare.

Birka was abandoned during the latter half of the 10th century. Based on the dating of the coins, the city seems to have died out around 960.Lindqvist, Herman. Historien om Sverige. Islossning till kungarike. 1996. See page 165. Roughly around the same time, the nearby settlement of Sigtuna supplanted Birka as the main trading center in the Mälaren area. The reasons for Birka's decline are disputed. The Baltic island of Gotland was also in a better strategic position for Rus'-Byzantine trade and was gaining eminence as a mercantile stronghold.2006 Encyclopædia Britannica. Article "Birka". Historian Neil Kent has speculated that the area may have been the victim of an enemy assault.

Written accounts Sources from Birka are mainly archaeological remains. No texts survive from this area, though the written text Vita Ansgari ("The Life of Ansgar") by Rimbert (c. 865) describes the missionary work of Ansgar around 830 at Birka, and Gesta Hammaburgensis Ecclesiae Pontificum (Deeds of Bishops of the Hamburg Church) by Adam of Bremen in 1075 describes the Archbishop Unni, who died at Birka in 936. Saint Ansgar's work was the first attempt to convert the people of Birka from the Norse religion to Christianity. It was unsuccessful.

Both Rimbert and Adam were German clergymen writing in Latin. There are no known Norse sources mentioning the name of the settlement, or even the settlement itself, and the original Norse name of Birka is unknown. Birca is the Latinised form given in the written sources by Rimbert and Adam; and Birka is the contemporary Swedish form. The Latin name is probably derived from an Old Norse word "birk" which probably means a market place. Related to this was the Bjärköa law (bjärköarätt) which regulated the life of market places in Denmark, Norway and Sweden.

Both publications are silent on Birka's size, layout, and appearance. Based on Rimbert's account, Birka was significant because it had a port and it was the location of the regional ting. Adam only mentions the port, but otherwise, Birka seems to have been significant to him because it was the start of Ansgar's Christian mission and because Archbishop Unni was buried there.

Vita Ansgari and Adam of Bremen's Gesta are sometimes ambiguous, which has caused some controversy as to whether Birka and the Björkö settlement are the same location. Many other locations have been suggested through the years.Some of them being Linköping, Köpingsvik and even Saltvik in Åland. However, Björkö is the only location that shows remains of a town of Birka's significance, which is why the vast majority of scholars regard Björkö as the location of Birka.Harrison, Dick, Sveriges historia – medeltiden (Falköping, 2002), p. 51

Rimbert's description In Vita Ansgari ("The life of Ansgar")Vita Ansgarii . Translation in English. monk and later archbishop of Hamburg-Bremen Rimbert gives the first known description of Birka. The town was the center of Catholic missionary activities in the 9th century Sweden. Rimbert's interests were in the Christian faith, not so much in the Swedish geopolicy, so his descriptions of Birka remain approximate at best.

Bridgehead of Christian missionaries This is how it all started in 829:

Meanwhile it happened that Swedish ambassadors had come to the Emperor Louis the Pious, and, amongst other matters which they had been ordered to bring to the attention of the emperor, they informed him that there were many belonging to their nation who desired to embrace the Christian religion, and that their king so far favoured this suggestion that he would permit God's priests to reside there, provided that they might be deemed worthy of such a favour and that the emperor would send them suitable preachers. (Chapter IX)

Ansgar then undertook the mission committed to him by the emperor, who desired that he should go to the Swedes and discover whether this people was prepared to accept the faith as their messengers had declared. (Chapter X)

Ansgar was already experienced in the missionary work in Denmark, and set forth to Sweden. Rimbert describes the trip very generally:

It may suffice for me to say that while they were in the midst of their journey they fell into the hands of pirates. The merchants with whom they were travelling, defended themselves vigorously and for a time successfully, but eventually they were conquered and overcome by the pirates, who took from them their ships and all that they possessed, whilst they themselves barely escaped on. foot to land. —With great difficulty they accomplished their long journey on foot, traversing also the intervening seas (maria), where it was possible, by ship, and eventually arrived at the Swedish port called Birka. (Chapters X and XI)

When Ansgar again travelled to Birka from Germany about 852, it went easier:

Ansgar accomplished the journey on which he had set out, and after spending nearly twenty days in a ship, he arrived at Birka (Chapter XXVI)

Kings Several Swedish kings of the 9th century, Björn, Anund and Olof, are all mentioned in Vita to have spent time in Birka. None of them is however said to have had his residence there, as the Swedish king and his retinue periodically moved between the Husbys, parts of the network of royal estates called Uppsala öd.

King Björn met Ansgar in Birka when he arrived there in 829 (Chapter XI). Later King Olof met him there as well during his last trip in 852 (Chapter XXVI).

Church Ansgar's missionary work resulted in first churches to be built in Sweden. Talking about Herigar, the prefect of Birka:

A little later he built a church on his own ancestral property and served God with the utmost devotion. (Chapter XI)

Herigar's church was not far from the place where tings were held:

On one occasion he himself was sitting in an assembly of people, a stage having been arranged for a council on an open plain. He then summoned his servants and told them to carry him to his church. (Chapter XIX)

Another church was also built in Sweden, however location is left open:

This Gautbert, who at his consecration received the honoured name of the apostle Simeon, went to Sweden, and was honourably received by the king and the people; and he began, amidst general goodwill and approval, to build a church there (Chapter XIV)

The exiled Swedish King Anund Uppsale confirms that either one of the churches was in Birka itself when he ponders if Birka should be plundered:

"There are there," he said, "many great and powerful gods, and in former time a church was built there, and there are many Christians there who worship Christ" (Chapter XIX)

Probable fortress

Danes attacked Birka, accompanied with the deposed king Anund, which caused great distress in the town.

Being in great difficulty they fled to a neighbouring city (ad civitatem, quæ iuxta erat, confugerunt) and began to promise and offer to their gods—But inasmuch as the city was not strong and there were few to offer resistance, they sent messengers to the Danes and asked for friendship and alliance. —Hergeir, the faithful servant of the Lord, was angry with them and said, "They will lead away your wives and sons as captives, they will burn our city (urbs) and town (vicus)"The Latin word vicus which Rimbert uses about Birka can also be translated as "market place" or "village". and will destroy you with the sword (Chapter XIX)

As the neighbouring "city" is not mentioned in any other context than during the Danish attack as a place where people took refuge, it probably meant a nearby fortress. Eventually the Danes left, sparing Birka from destruction.

Ting assembly When Ansgar asked if King OlofScandinavian sources omit King Olof from the list of kings that reigned in Uppsala. would permit him to establish the Christian religion in the kingdom during his second visit in 852, the king said to him:

On this account I have not the power, nor do I dare, to approve the objects of your mission until I can consult our gods by the casting of lots and until I can enquire the will of the people in regard to this matter. Let your messenger attend with me the next assembly (Chapter XXVI)

When the day for the assembly which was held in the town of Birka drew near, in accordance with their national custom the king caused a proclamation to be made to the people by the voice of a herald, in order that they might be informed concerning the object of their mission. —The king then rose up from amongst the assembly and forthwith directed one of his own messengers to accompany the bishop's messenger, and to tell him that the people were unanimously inclined to accept his proposal and at the same time to tell him that, whilst their action was entirely agreeable to him, he could not give his full consent until, in another assembly, which was to be held in another part of his kingdom, he could announce this resolution to the people who lived in that district. (Chapter XXVII)