why would i ignore the rural parts? the original comment started by saying he lived in rural denmark on a farm.
Developed land in the united states is about 3% of the total land, so 113,820 square miles. (6.8 times the total size of denmark)
75% of the population lives in that space. The U.S. population is about 317 million people, so about 237,750,000 people.
denmark's population is about 5,607,000 people.
So if we just use the developed land in the United States, it's 6.8 times the size of denmark and has 42 times the number of people living in it. And it's broken up into separated pieces of developed space that exists in different regulatory and physical environments.
I still don't think they're comparable situations.