Ahh ok, I didn't know that, I assumed they had a bloody revolution same as everywhere else, understandable the confusion mix with kokjo now.
He just left out the Saxon's (germans) taking over Denmark in the 1400's (the nobles chose a saxon king to avoid war) and he also left out the wars with sweden, norway (oops, not denmark) and germany since then.
And the 1848 revolution was threatening to get bloody but the king decided to fold and appease the angry landlords.