who was the first leader of unified england
Kingdom of England The kingdom of England emerged from the gradual unification of the early medieval Anglo-Saxon kingdoms known as the Heptarchy: East Anglia, Mercia, Northumbria, Kent, Essex, Sussex, and Wessex. The Viking invasions of the 9th century upset the balance of power between the English kingdoms, and native Anglo-Saxon life in general. The English lands were unified in the 10th century in a reconquest completed by King Ã†thelstan in 927 CE.