Original sentence: The Mercians converted to Christianity in 654 AD when the pagan king Penda was killed in battle against the Northumbrians.. From about 889 the area was conquered by the Danes (as at one point was almost all of England except for Athelney marsh in Somerset) and became part of the Danelaw - with Watling Street serving as the boundary - until being recaptured by the English under the Wessex king Edward the Elder, son of Alfred the Great, in 917
Edited sentence: From about 889 the area was conquered by the Danes (as at one point was almost all of England except for Athelney marsh in Somerset) and became part of the Danelaw - with Watling Street serving as the boundary - until being recaptured by the English under the Wessex king Edward the Elder, son of Alfred the Great, in 917.The Mercians converted to Christianity in 654 AD with the death of the pagan king Penda