Alright, this one needs a bit explanation, as it contains a few references that people unfamiliar with Danish pop culture might not get.
In the U.S. state of Iowa, more specifically in Shelby County, there is a small town called Elk Horn. This town was founded in 1901 by Danish emigrants, and its Danish heritage can still be sensed today. The townspeople have surnames like Hansen, Jensen and Petersen, they have a Danish windmill brought in piece by piece from the Danish town Nørre Snede back in 1976, and they have a grocery store which sells imported Danish goods.
However, the newer generations of the town seem to have got their own special interpretations of Danish cuisine especially. For instance, they have a diner that serves æbleskiver (balls of pancake-like batter fried in a special frying pan with seven dimples and eaten around Christmas time in Denmark) together with medisterpølse (a kind of Danish pork sausage), which is a combination you'd NEVER see around here.
America's reaction in the third panel is a reference to the SATW strip "Who to give Flowers".
The two men next to America in the last panel are Danish brothers James and Adam Price, known in Denmark for their cooking show "Spise med Price". They visited Elk Horn in a Christmas special of their show in 2014, to reintroduce the town to a true Danish 'julefrokost' (Christmas lunch), as well as a true Danish Christmas dinner. Plus, they taught Elk Horn's mayor Stan Jens a more proper way to make a Danish 'leverpostej' (liver paté) than the one he had attempted until then.