American Greenland, German Mindanao, Danish North Schleswig
Doubtful, too few people live in Greenland (lessthan 60.000 people). Even if we triple the amount of people just because Greenland is part of the US, there will way too few people living in Greenland for statehood. It will probably have the same status as the Virgin islands.
It becomes a northern Palau; 'free association' with the United States, U.N. membership (and a reliable vote for the U.S. position there), and, unlike Palau for obvious reasons, NATO membership.
With U.S. dollar usage on three sides of Canada, a monetary union in some form seems less unlikely than OTL.
As far as British Mindanao, the consequences for Sabah and Malaysia could be interesting.
raharris1973
Gone Fishin'
Was this concept authorized by US SecState and Taft?
A motive for Germany to do this could be diversification of holdings, and improved relations with Denmark. North Schleswig may generate as much or more tax revenues, and houses some German speakers. But it also houses Danish-speaking voters, and the land-use is redundant with the rest of Schleswig. Mindanao by contrast offers tropical produce, the port of Davao and a strategic location near China and Southeast Asia.
However North Schleswig holds more attachment to German public than Mindanao. Also doing so sets a bad precedent with regards to Alsace-Lorraine.
Driftless
Donor
The Japanese would love to swoop in and take Mindanao, just as they scooped up several other of the German Pacific Islands.
I wonder, if under the circumstances, if the US would offer to buy out the German possession to keep the Japanese (and/or British/French/Dutch) from acquiring Mindanao? How feasible is that? They'd have to act very quickly.
And then the US would demand the money back as reparations at the end of the war. Hating America might be popular in post-WWI Germany.