Board Thread:What If?/@comment-5674726-20140809221552/@comment-5674726-20140906134851

Merlin wouldn't be necessary to create England. History would play out without him.

As for Morgana, I think that by Season Five, she was too far gone to benefit from her victory. She was desperate to take the throne from Arthur and Guinevere and was prepared to go to great lengths to accomplish her goal but, once she had the crown and once Arthur died in battle and Guinevere was killed in the crossfire or executed later, I could see her being lost, not knowing what to do next.

By the battle of Camlann, Camelot was much weaker than it was under Uther's rule at the beginning of the series. I'd say that it was living on borrowed time as of the end of the series but in this scenario, it'd be even weaker and more divided so it wouldn't last.