Following the conquest of the temple fort , later known as Jaromarsburg, on Arkona in 1168 by the Danes under King Valdemar I and Bishop Absalon of Roeskilde, the princes of Rügen had to recognise Danish suzerainty. On their accession to power, the Rügen princes were forced to confirm their allegiance to the Danish king and were obliged to provide military support to the Danes. In 1304 Vitslav III of Rügen gained sole lordship over the territory on the death of his brother, Sambor. Because he had no issue at that point in time, there existed the possibility that Rügen's princely house could become extinct. As a result, in 1310 he agreed a contract of inheritance at Ribnitz with the Danish king, Eric VI Menved, his feudal lord. The agreement was that in the event of Vitslav dying without issue, the fiefdom of Rügen would be returned to the Danish crown. At that time, Eric VI Menved was attempting to extend his power in the southern Baltic Sea region in order to reduce the influence of Hanseatic towns like Stralsund. To assist him, in addition to the princes of Rügen, the king also had Prince Henry II of Mecklenburg as a vassal. After the death of Eric VI Menved in 1319, the 1310 treaty lapsed and Vitslav III sought allies in the Pomeranian dukes. On 5 May 1321 dukes Otto I of Pomerania, Vartislav IV of Pomerania-Wolgast and Barnim II of Pomerania-Stettin agreed a mutual inheritance contract with Vitslav III of Rügen. But in an alliance agreement that had been previously concluded on 25 October 1315 between Vartislav IV, the son of Vitslav's sister, Margaret, and Eric's brother, Christopher of Halland, who later became King Christopher II of Denmark, Vartislav IV had already been promised the Rügen fiefdom.

Question: How many years had Vitslav III had sole lordship before he signed a contract of inheritance with the Danish king?
Answer: 6

Question: How many years after Vitslav III gained sole lordship did he agree to a contract of inheritance?
Answer: 6

Question: Who was the Danish King in 1168?
Answer: King Valdemar I

Question: What was Vartislav IV's father's name?
Answer: Christopher of Halland

Question: How was Margaret related to Vitslav?
Answer: sister

Question: What happened first, the conquest of the temple fort, or the recognition of Danish suzerainty?
Answer: conquest of the temple fort

Question: How many Danish leaders led the conquest at the temple fort?
Answer: 2

Question: Who ruled first, Vitslav III of Rügen, or Sambor?
Answer: Sambor

Question: How many years after Vitslav III of Rügen gained sole lordship over the territory did he agree on a contract of inheritance at Ribnitz with the Danish king, Eric VI Menved?
Answer: 6

Question: Who died first, Vitslav III or Sambor?
Answer: Sambor

Question: How many vassals did Eric VI have?
Answer: 2

Question: How many years after making the contract with Vitslav III did Eric VI die?
Answer: 9

Question: Who did Vitslav III ally with after Erik IV?
Answer: Pomeranian dukes

Question: Who was Sambor's brother?
Answer: Vitslav III of Rügen

Question: Who was Margaret's brother?
Answer: Vitslav

Question: How many people had made an agreement with Vartislav IV for the Rügen fiefdom?
Answer: 2