Æthelstan was a king of the Anglo-Saxons who ruled from 924 to 939 AD. He is often regarded as the first King of England, as he successfully united various kingdoms, including Wessex, Mercia, and Northumbria. His reign marked a significant period of stability and growth in England. During Æthelstan's rule, he implemented important legal reforms and promoted education and culture. He was known for his military prowess, defeating Viking invaders and securing his kingdom's borders. Æthelstan's legacy includes the establishment of a more centralized government and the strengthening of the English identity.