Northern America is the northernmost region of America, and is part of the North American continent. It lies directly north of the region of Middle America; the land border between the two regions coincides with the border between the United States and Mexico. Geopolitically, according to the scheme of geographic regions and subregions used by the United Nations, Northern America consists of:

United States

Canada

Bermuda, an overseas territory of the United Kingdom

Greenland, a self-governing island that is part of the Kingdom of Denmark

Saint-Pierre and Miquelon, an overseas territory of France

Maps using the term Northern America date back to 1755, when the region was occupied by France, Great Britain, and Spain. The Solemn Act of the Declaration of Independence of Northern America in 1813 applied to Mexico. Today, Northern America includes the Canada-US dyad, developed countries that exhibit very high human development and intense economic integration while sharing many socioeconomic characteristics, including increasingly divergent demographic patterns (e.g., fertility levels).

Captain America is a fictional character, a superhero who appears in comic books published by Marvel Comics. The character first appeared in Captain America Comics #1 (cover-dated March 1941), from Marvel Comics' 1940s predecessor, Timely Comics, and was created by Joe Simon and Jack Kirby. As of 2007, an estimated 210 million copies of "Captain America" comic books had been sold in 75 countries. For nearly all of the character's publication history, Captain America was the alter ego of Steve Rogers, a frail young man who was enhanced to the peak of human perfection by an experimental serum in order to aid the United States war effort. Captain America wears a costume that bears an American flag motif, and is armed with an indestructible shield that can be thrown as a weapon.

An intentionally patriotic creation who was often depicted fighting the Axis powers of World War II, Captain America was Timely Comics' most popular character during the wartime period. After the war ended, the character's popularity waned and he disappeared by the 1950s aside from an ill-fated revival in 1953. Captain America was reintroduced during the Silver Age of comics when he was revived from suspended animation by the superhero team the Avengers in The Avengers #4 (March 1964). Since then, Captain America has often led the team, as well as starring in his own series.