When the Germans made war with Denmark in 1940, the Danish had no power to stop them. It's kinda like, "They see me rulin', but they hatin'." LOL. And they have the nerve to brag about others. As much as I may not like Britain, at least they never surrendered. Even though they were a bunch of pieces of crap.
Often, discretion is the better part of valor.
Denmark had little chance to stand against the Blitz, which was an unprecedented military maneuver.
Germany had all of Europe out-manned and outgunned.
It is very difficult to fight when the leadership is captured before war is even declared.
Hitler knew a united Scandinavia would be a serious concern, so he struck Denmark swiftly and left them no chance to recover.
"Poland didn't surrender despite being brutally overpowered by the Germans. Poland was in a vulnerable spot. Yet they didn't surrender.
So that means Denmark was a country of cowards"
That statement has poor logic. You are saying that since Poland, and entirely different country and tactical situation, decided to fight the Nazis that makes the Daines cowards. That makes little sense when you actually analyze the situation.
The Nazis invaded Poland more conventionally with less of a preemptive strike. Poland is a much larger country than Denmark, had a larger military, and had more time to prepare. The fact that the Nazis managed to attack and occupy Denmark's capital immediately gives all the more reason for Denmark to surrender seeing little reason to continue fighting if you lost your capital in a sudden preemptive strike they could do little about. Poland managed to protect vital regions of their nation for a considerable amount of time. Poland did surrender about two months into the war. That was not long after they lost their capital much like how Denmark lost.