Horse racing is one of the oldest sports, and it has influenced cultures around the world for hundreds of years. From Ancient Greece to Babylon to Rome, horse races have been documented. Archeological records show that the sport existed in Egypt, Syria, and the Middle East. Today, racing is held in several countries, including the United States, Britain, Japan, and South Africa. Horses reach their full potential at five years old. As such, older horses are not permitted in most racing events. However, the classic age for a horse to enter a race is three. The Prix de l'Arc de Triomphe in Paris and the Grand National in Aintree, England, both admit older horses. The first recorded horse race occurred in France during the reign of Louis XIV (1643-1715). At the time, gambling-based racing was a popular pastime. Racing became organized in North America with the British occupation of New Amsterdam in 1664. In the 1860s, American Thoroughbred horses gained national stature. They had one characteristic in common with their European counterparts: stamina. After the Civil War, the era of the sprinting blood ended, and speed became the defining characteristic of a successful race. As the sport grew in popularity, its rules and regulations changed. Among other things, the post position became irrelevant. To make sure all horses had an equal chance to win, handicaps were created. These were based on the horse's age, its sex, and its performance. Another change was the use of thermal imaging cameras to determine whether a horse was overheating post-race. This practice was instituted to ensure the safety of racers. Several countries also have instituted the Triple Crown, which includes the Kentucky Derby, the Belmont Stakes, and the Preakness Stakes. Many countries also have a 'horse-race' of their own, such as the Grande Premio Sao Paulo Internacional in Brazil or the Gran Premio Internacional Carlos Pellegrini in Argentina. Another notable change was the addition of a second prize. Initially, a silver cup was awarded to the best horse. Eventually, as more fields of horses raced, the prize shifted to a third. Eventually, a fourth prize was added as well. For most of its history, racing has adhered to the traditional rules, although technological advancements and changing demographics have influenced the sport. Among other things, 3D printing has been used to create prostheses for injured horses. Choosing a leader in a horse race is a great way to motivate employees and reinforce a company's core values. However, some executives are uncomfortable with the concept. Nevertheless, horse races have had an impact on business for centuries. Although the origins of horse racing are not fully understood, there are some important historical facts to learn. For example, the first documented horse-race was the wager between two noblemen in France in 1651. Later that year, a royal decree ordered that all horses be officially certified as having originated from a certain country. Other notable changes in the sport include the introduction of a flag start. Flag starts require special permission and must be implemented in a specific situation.