Final answer:
The Anglo-Saxon king of England from 927 to 1013 was Æthelstan, known for ruling a unified England and defending against Viking invasions. The Anglo-Saxons contributed significantly to English culture, evident in Old English literature such as Beowulf.
Step-by-step explanation:
The Anglo-Saxon king of England from 927 to 1013 was Æthelstan, who was the first monarch to rule a unified England. His reign was marked by a period of consolidation after the frequent Viking invasions that had plagued his predecessors. He was succeeded by a series of other Anglo-Saxon kings until 1013 when Sweyn Forkbeard, a Viking king, conquered England.
England's history during the Anglo-Saxon period was characterized by a series of invasions, beginning with the arrival of the Angles, Saxons, and Jutes after the withdrawal of the Romans around 400 CE. After a long period of Viking raids and battles for control, it was King Alfred of Wessex who successfully defended against the Danes in 878. The legacy of the Anglo-Saxons lasted until the Norman Conquest in 1066, which marked the end of this era and the beginning of Norman rule.
The most significant contribution of the Anglo-Saxons to English culture was the development of Old English, from which we have inherited a rich literature, including the epic poem Beowulf.