Compléter Fill in the Blanks the Formation fo EnglandVersion en ligne Fill in the blanks with the correct information par Uriel 1 793 Viking Roman 689 In , a army landed at the Lindisfarne Monastery and raided the sacred building . 2 Mercia Wessex Northumbria Sussex As the Vikings seized next in 875 , was the only remaining major kingdom under Anglo - Saxon authority . 3 Saxon Northumbria Mercia Viking Æthelstan ? s sister would marry the local ruler , Sihtric , who still controlled . 4 Alfred Æthelstan Edward Æthelflæd 917 In , expanded her lands to the north and was able to incorporate all of East Anglia into his kingdom . 5 Æthelflæd York Æthelstan Sussex marched on and was finally able to bring the Kingdom of under his crown as his sister ? s husband passed away .