Background: William II (Old Norman: Williame; c. 1056 - 2 August 1100), the third son of William the Conqueror, was King of England from 1087 until 1100, with powers over Normandy, and influence in Scotland. He was less successful in extending control into Wales. William is commonly known as William Rufus (Rufus being Latin for 'the Red'), perhaps because of his red-faced appearance or, more likely, due to having red hair as a child that grew out in later life.
Context: William Rufus inherited the Anglo-Norman settlement detailed in the Domesday Book, a survey undertaken at his father's command, essentially for the purposes of taxation, which was an example of the control of the English monarchy. If he was less effective than his father in containing the Norman lords' propensity for rebellion and violence, through charisma, or political skills, he was forceful in overcoming the consequences. In 1095, Robert de Mowbray, the earl of Northumbria, refused to attend the Curia Regis, the thrice-annual court where the King announced his governmental decisions to the great lords. William led an army against Robert and defeated him. Robert was dispossessed and imprisoned, and another noble, William of Eu, accused of treachery, was blinded and castrated. In external affairs, William had some successes. In 1091 he repulsed an invasion by King Malcolm III of Scotland, forcing Malcolm to pay homage. In 1092 he built Carlisle Castle, taking control of Cumberland and Westmorland, which had previously been claimed by the Scots. Subsequently, the two kings quarrelled over Malcolm's possessions in England, and Malcolm again invaded, ravaging Northumbria. At the Battle of Alnwick, on 13 November 1093, Malcolm was ambushed by Norman forces led by Robert de Mowbray. Malcolm and his son Edward were killed and Malcolm III's brother Donald seized the throne. William supported Malcolm's son Duncan II, who held power for a short time, and then another of Malcolm's sons, Edgar. Edgar conquered Lothian in 1094 and eventually removed Donald in 1097 with William's aid in a campaign led by Edgar AEtheling. Edgar recognised William's authority over Lothian and attended William's court. William made two forays into Wales in 1097. Nothing decisive was achieved, but a series of castles was constructed as a marchland defensive barrier. In 1096, William's brother Robert Curthose joined the First Crusade. He needed money to fund this venture and pledged his Duchy of Normandy to William in return for a payment of 10,000 marks--a sum equalling about a quarter of William's annual revenue. In a display of the effectiveness of English taxation, William raised the money by levying a special, heavy, and much-resented tax upon the whole of England. William then ruled Normandy as regent in Robert's absence. Robert did not return until September 1100, one month after William's death. As regent for his brother Robert in Normandy, William campaigned in France from 1097 to 1099. He secured northern Maine but failed to seize the French-controlled part of the Vexin region. According to William of Malmesbury he was planning to invade Aquitaine at the time of his death.
Question: Who surveyed this place
Answer: survey undertaken at his father's command,

Problem: Background: The term "Moors" refers primarily to the Muslim inhabitants of the Maghreb, the Iberian Peninsula, Sicily, and Malta during the Middle Ages. The Moors initially were the Berber autochthones of the Maghreb. The name was later also applied to Arabs. Moors are not a distinct or self-defined people, and the 1911 Encyclopaedia Britannica observed that "The term 'Moors' has no real ethnological value."
Context: The first Muslim conquest of Sicily began in 827, though it was not until 902 that almost the entire island was in the control of the Aghlabids, with the exception of some minor strongholds in the rugged interior. During that period some parts of southern Italy fell under Muslim control, most notably the port city of Bari, which formed the Emirate of Bari from 847-871. In 909 the Aghlabid dynasty was replaced by Shiite Fatimids. Four years later, the Fatimid governor was ousted from Palermo when the island declared its independence under Emir Ahmed ibn-Kohrob. The language spoken in Sicily under Muslim rule was Siculo-Arabic. In 1038, a Byzantine army under George Maniaces crossed the strait of Messina. This army included a corps of Normans that saved the situation in the first clash against the Muslims from Messina. After another decisive victory in the summer of 1040, Maniaces halted his march to lay siege to Syracuse. Despite his success, Maniaces was removed from his position, and the subsequent Muslim counter-offensive reconquered all the cities captured by the Byzantines. The Norman Robert Guiscard, son of Tancred, invaded Sicily in 1060. The island was split between three Arab emirs, and the Christian population in many parts of the island rose up against the ruling Muslims. One year later, Messina fell, and in 1072 Palermo was taken by the Normans. The loss of the cities, each with a splendid harbor, dealt a severe blow to Muslim power on the island. Eventually all of Sicily was taken. In 1091, Noto in the southern tip of Sicily and the island of Malta, the last Arab strongholds, fell to the Christians. Islamic authors noted the tolerance of the Norman kings of Sicily. Ibn al-Athir wrote: "They [the Muslims] were treated kindly, and they were protected, even against the Franks. Because of that, they had great love for King Roger." The Muslim problem characterized Hohenstaufen rule in Sicily under Holy Roman Emperors Henry VI and his son Frederick II. Many repressive measures were introduced by Frederick II to please the popes, who were intolerant of Islam in the heart of Christendom. This resulted in a rebellion by Sicilian Muslims, which in turn triggered organized resistance and systematic reprisals and marked the final chapter of Islam in Sicily. The complete eviction of Muslims and the annihilation of Islam in Sicily was completed by the late 1240s when the final deportations to Lucera took place.
Question: What was the significance of the move?
Answer:
During that period some parts of southern Italy fell under Muslim control, most notably the port city of Bari, which formed the Emirate of Bari from 847-871.