Question: Before it was conquered by the followers of Muhammad, who ruled the nation that is one of the countries that is a source of the foreign inhabitants in the country that released the band that Bengt Lagerberg belongs to.

full_context: Document 1: Best Of (The Cardigans album): Best Of is a greatest hits album by the Swedish group The Cardigans, released in Europe in January 2008. It contains twenty-one singles and album tracks. There is also a double-CD version with rare tracks and B-sides. Both versions of the album contain no new songs, though some tracks had previously been released only in the UK or Japan.
Document 2: Mikael Stanne: Bengt Mikael Stanne (born 20 May 1974) is the vocalist & one of the lyricists (also previously rhythm guitarist) for the Swedish melodic death metal band, Dark Tranquillity and the ex-vocalist for Swedish power metal band HammerFall.
Document 3: Mats Rådberg: Mats Rådberg, born 8 June 1948 in Brännkyrka Parish in Stockholm, Sweden is a Swedish country singer, guitarist, composer and architect scoring several chart successes in Sweden during the 1970s and 80s. He is well known for working together with the country band Rankarna under the name "Mats Rådberg & Rankarna". He also participated at Melodifestivalen 1977 with the song "Du och jag och sommaren", written by Tomas Ledin, which ended up 10th.
Document 4: Umayyad Caliphate: The Quran and Muhammad talked about racial equality and justice as in The Farewell Sermon. Tribal and nationalistic differences were discouraged. But after Muhammad's passing, the old tribal differences between the Arabs started to resurface. Following the Roman–Persian Wars and the Byzantine–Sassanid Wars, deep rooted differences between Iraq, formally under the Persian Sassanid Empire, and Syria, formally under the Byzantine Empire, also existed. Each wanted the capital of the newly established Islamic State to be in their area. Previously, the second caliph Umar was very firm on the governors and his spies kept an eye on them. If he felt that a governor or a commander was becoming attracted to wealth, he had him removed from his position.
Document 5: Switzerland: In 2012, resident foreigners made up 23.3% of the population. Most of these (64%) were from European Union or EFTA countries. Italians were the largest single group of foreigners with 15.6% of total foreign population. They were closely followed by Germans (15.2%), immigrants from Portugal (12.7%), France (5.6%), Serbia (5.3%), Turkey (3.8%), Spain (3.7%), and Austria (2%). Immigrants from Sri Lanka, most of them former Tamil refugees, were the largest group among people of Asian origin (6.3%). Additionally, the figures from 2012 show that 34.7% of the permanent resident population aged 15 or over in Switzerland, i.e. 2,335,000 persons, had an immigrant background. A third of this population (853,000) held Swiss citizenship. Four fifths of persons with an immigration background were themselves immigrants (first generation foreigners and native-born and naturalised Swiss citizens), whereas one fifth were born in Switzerland (second generation foreigners and native-born and naturalised Swiss citizens). In the 2000s, domestic and international institutions expressed concern about what they perceived as an increase in xenophobia, particularly in some political campaigns. In reply to one critical report the Federal Council noted that "racism unfortunately is present in Switzerland", but stated that the high proportion of foreign citizens in the country, as well as the generally unproblematic integration of foreigners", underlined Switzerland's openness.
Document 6: The Cardigans discography: The Cardigans are a band from Sweden. They have released 6 studio albums which in total have sold about 15 million copies worldwide. This is a list of their album and single releases.
Document 7: Lovefool: ``Lovefool ''is a song written by Peter Svensson and Nina Persson for The Cardigans' third studio album, First Band on the Moon (1996). It was released as a single on 14 September 1996 in the United Kingdom and internationally on 5 October 1996. It was released as the album's lead single in 1996 and became the Cardigans' first international hit single, topping the Billboard Hot 100 Airplay chart and making appearances on six other Billboard charts. In 1997, the song found international success, peaking at number two on the UK Singles Chart and finding moderate success on some other European charts. The single also topped the charts in New Zealand, and was certified Gold in Australia.
Document 8: Umayyad Caliphate: After the assassination of Uthman in 656, Ali, a member of the Quraysh tribe and the cousin and son-in-law of Muhammad, was elected as the caliph. He soon met with resistance from several factions, owing to his relative political inexperience. Ali moved his capital from Medina to Kufa. The resulting conflict, which lasted from 656 until 661, is known as the First Fitna ("civil war"). Muawiyah I, the governor of Syria, a relative of Uthman ibn al-Affan and Marwan I, wanted the culprits arrested. Marwan I manipulated everyone and created conflict. Aisha, the wife of Muhammad, and Talhah and Al-Zubayr, two of the companions of Muhammad, went to Basra to tell Ali to arrest the culprits who murdered Uthman. Marwan I and other people who wanted conflict manipulated everyone to fight. The two sides clashed at the Battle of the Camel in 656, where Ali won a decisive victory.
Document 9: Bengt Lagerberg: Bengt Lagerberg (born 5 July 1973), is best known as the drummer in the Swedish rock band The Cardigans. He is currently living in Malmö.
Document 10: Umayyad Caliphate: Early Muslim armies stayed in encampments away from cities because Umar feared that they might get attracted to wealth and luxury. In the process, they might turn away from the worship of God and start accumulating wealth and establishing dynasties. When Uthman ibn al-Affan became very old, Marwan I, a relative of Muawiyah I, slipped into the vacuum, became his secretary, slowly assumed more control and relaxed some of these restrictions. Marwan I had previously been excluded from positions of responsibility. In 656, Muhammad ibn Abi Bakr, the son of Abu Bakr, the adopted son of Ali ibn Abi Talib, and the great grandfather of Ja'far al-Sadiq, showed some Egyptians the house of Uthman ibn al-Affan. Later the Egyptians ended up killing Uthman ibn al-Affan.
Document 11: The Cardigans: The Cardigans are a Swedish rock band formed in Jönköping, Sweden, in 1992 by guitarist Peter Svensson, bassist Magnus Sveningsson, drummer Bengt Lagerberg, keyboardist Lars-Olof Johansson and lead singer Nina Persson. The group's line-up has been very stable, the only change being that their post-hiatus shows since 2012 have been with Oskar Humlebo on guitar instead of Svensson.
Document 12: Sweden: Between 1820 and 1930, approximately 1.3 million Swedes, a third of the country's population at the time, emigrated to North America, and most of them to the United States. There are more than 4.4 million Swedish Americans according to a 2006 US Census Bureau estimate. In Canada, the community of Swedish ancestry is 330,000 strong.There are no official statistics on ethnicity, but according to Statistics Sweden, around 3,193,089 (31.5%) inhabitants of Sweden were of a foreign background in 2017, defined as being born abroad or born in Sweden with at least one parent born abroad. The most common countries of origin were Syria (1.70%), Finland (1.49%), Iraq (1.39%), Poland (0.90%), Iran (0.73%) and Somalia (0.66%).  Sweden subsequently has one of the oldest populations in the world, with the average age of 41.1 years.
Document 13: Somalis: While the distribution of Somalis per country in Europe is hard to measure because the Somali community on the continent has grown so quickly in recent years, an official 2010 estimate reported 108,000 Somalis living in the United Kingdom. Somalis in Britain are largely concentrated in the cities of London, Sheffield, Bristol, Birmingham, Cardiff, Liverpool, Manchester, Leeds, and Leicester, with London alone accounting for roughly 78% of Britain's Somali population. There are also significant Somali communities in Sweden: 57,906 (2014); the Netherlands: 37,432 (2014); Norway: 38,413 (2015); Denmark: 18,645 (2014); and Finland: 16,721 (2014).
Document 14: Hep Stars: The Hep Stars were a Swedish rock group, formed in 1963 in Stockholm. During 1965-66 the band was the most successful of contemporary 1960s Swedish pop groups performing in the English language. Outside The Nordic Countries the band is best known as a launching point for the keyboard player and composer Benny Andersson, who went on to enjoy worldwide success with ABBA.
Document 15: Umayyad Caliphate: The Umayyad caliphate was marked both by territorial expansion and by the administrative and cultural problems that such expansion created. Despite some notable exceptions, the Umayyads tended to favor the rights of the old Arab families, and in particular their own, over those of newly converted Muslims (mawali). Therefore, they held to a less universalist conception of Islam than did many of their rivals. As G.R. Hawting has written, "Islam was in fact regarded as the property of the conquering aristocracy."
ground_truth: Byzantine Empire
sub_queries: Bengt Lagerberg >> member of Answer: The Cardigans
What country released The The Cardigans ? Answer: Sweden
What is one country of origin that makes up foreign inhabitants of Sweden ? Answer: Syria
Who ruled Syria before it was conquered by the followers of Muhammad? Answer: Byzantine Empire