Denmark, officially the Kingdom of Denmark, is a Nordic country in Northern Europe. Denmark consists of a peninsula, Jutland, and an archipelago of 443 named islands. Denmark lies southwest of Sweden and south of Norway, and is bordered to the south by Germany. The Kingdom of Denmark comprises of Denmark proper and the two autonomous territories in the North Atlantic Ocean - the Faroe Islands and Greenland. Denmark has a total area of 42,943 km2 (16,580 sq mi) as of 2020, and the total area including Greenland and the Faroe Islands is 2,210,579 km2 (853,509 sq mi).

Ontario is one of the thirteen provinces and territories of Canada. Located in Central Canada, it is Canada's most populous province, with 38.3 percent of the country's population, and is the second-largest province by total area (after Quebec). Ontario is Canada's fourth-largest jurisdiction in total area when the territories of the Northwest Territories and Nunavut are included. Ontario is bordered by the province of Manitoba to the west, Hudson Bay and James Bay to the north, and Quebec to the east and northeast, and to the south by the U.S. states of (from west to east) Minnesota, Michigan, Ohio, Pennsylvania, and New York.