There is not much that you can do with Greenland. It only can be turn into a tourist spot or seaport. They has a lot of natural untouched resource.
As the Arctic ice continues to melt due to global warming, Greenland’s mineral and energy resources – including iron ore, lead, zinc, diamonds, gold, rare earth elements, uranium and oil – are becoming more accessible.
The Greenland Gold Rush: Promise and Pitfalls of Greenland’s Energy and Mineral Resources
Will mining save or ruin Greenland?
Greenland closer to building world’s fifth-largest uranium mine
Greenland is believed by some geologists to have some of the world’s largest remaining oil resources.
[12] Prospecting is taking place under the auspices of
NUNAOIL, a partnership between the
Greenland Home Rule Government and the Danish state.
U.S. Geological Survey found in 2001 that the waters off north-eastern Greenland, in the
Greenland Sea north and south of the Arctic Circle, could contain up to 110 billion barrels
Petroleum exploration in the Arctic - Wikipedia