The U.S. has — by far — the world’s largest defense budget, spending $948 billion last year. Its armed forces have 1.3 million personnel — some of them currently stationed in Greenland. Denmark, for its part, last year spent $9.9 billion, has only 17,000 soldiers, and most of its heavy land-warfare equipment has been donated to Ukraine.
Well, I read earlier today a linguistics article called "Spatial Deixis and the Demonstrative System of Kalaallisut", which might be worth mentioning, since it goes into a lot of the basics of Greenland's history and present situation, and explains how these fit in with the historical and current evolution of the Greenlandic language itself.
Otherwise I can highly recommend a YouTube video, "How Denmark Destroyed Greenland: Brief History of Denmark's Colonialism in Greenland", which I think is a well-sourced and well-made primer on the basics — in fact it's already been shared twice before on Hexbear and once on Lemmygrad.
I found a YouTube link in your comment. Here are links to the same video on alternative frontends that protect your privacy: