This is a tough one: Viking invaders executed by the Anglo-Saxons. Who does Obama apologize to?
I may be mangling my English geography but I believe Dorsetshire is in the southwest, which was a Celt holdout. Tenth century, there wouldn't have been a great deal of Saxon influence yet. But, he'd likely view it as we'd view a van full of lawyers crashing through a bridge railing and falling into shark-infested waters ... a start.
Easy, the vikings. Why? Glad you asked. As aggressors against a western civilization the vikings were obviously the superior culture and should be apologized to.
"carter - now available in black" obama always sides against the west and always against the victim.
Pray for obama. Psalm 109:8-9