Horse racing is an equestrian sport that has a long history. Archaeological records indicate that horse racing occurred in ancient Babylon, Syria, and Egypt. Both chariot and mounted horse racing were events in the ancient Greek Olympics by 648 BC. In the Roman Empire, chariot and mounted horse racing were major industries.Thoroughbred racing was, and is, popular with the aristocrats and royalty of British society, earning it the title "Sport of Kings."

The style of racing, the distances and the type of events vary significantly by the country in which the race is occurring, and many countries offer different types of horse races. There are three major types of racing: flat racing, steeplechasing (racing over jumps), and harness racing, where horses trot or pace while pulling a driver in a sulky. A major part of horse racing's economic importance lies in the gambling associated with it, an activity that in 2008 generated a world-wide market worth around US$115 billion.

Various types of racing have given rise to horse breeds that excel in the specific disciplines of each sport. Breeds that may be used for flat racing include the Thoroughbred, Quarter Horse, Arabian, Paint, and Appaloosa. Steeplechasing breeds include the Thoroughbred and AQPS. Harness racing is dominated by Standardbred horses in Australia, New Zealand and North America, but several other breeds, such as the Russian Trotter and Finnhorse, are seen in Europe.

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.