Synonym American football generally refers to American football
American football (American football, usually referred to as football), also known as American football, is a kind of rugby sport , the most popular sport in the United States , and the first of the four major professional sports in North America . American football originated from rugby, after the United States passed the rules change, instead turn to take the offensive and defensive line of scrimmage, there is no post moves to limit and can throw the ball forward, the purpose of this exercise is to put balls into the opponent There are many ways to score in the end zone, including holding the ball across the baseline, throwing the ball to a teammate behind the baseline, or kicking the ball directly on the ground through the middle of the two goal posts to shoot . The team with more points at the end of the game wins.  American football is a highly antagonistic contact sport. Because of the strong physical collisions with opposing players during a ball game, players need to wear helmets and protective gear to play.
In some elementary schools, it is popular for one person to pass the ball out of the touchdown zone. Others ran to catch the ball when the person said “hi”. They must run to the opponent’s touchdown zone at one time. If they are touched by the opponent, they start from the beginning. Rugby , such as ABCombs Elementary School in Raleigh.
American football 19th century
History American football derived from the United Kingdom in the mid-19th century, a variety of popular public school early “football class” movement, is a rugby evolved directly over. Rugby was first introduced to North America by the British Army at McGill University in Montreal , Canada .Family Video, The first intercollegiate rugby game was held on November 6, 1869, between Rutgers University in New Jersey and Princeton University . In the end, Rutgers defeated Princeton 6-4-despite the 25-player match. There is
The format of modern American football was developed in a three-game series between Harvard University and Montreal McGill University in 1874 . McGill played similarly to rugby at the time, while Harvard used the “Boston” style which is more similar to football. Since there is no uniform ball rule, the two teams take turns to play their own ball rules to show fairness. Harvard players like to run with the ball in rugby, so in 1875 they persuaded Yale University to use the rugby ball as a ball example for their two teams. In 1875, Yale , Harvard , Princeton and Columbia University formed the Intercollegiate Football Association (Intercollegiate Football Association) with rugby ball rules, but the scoring ball rules were slightly changed.
In 1880, Yale University coach Walter Camp (Walter Camp) introduced offensive and defensive lines to replace the rugby-style side-by-side formation, requiring 11 players on each side, including 4 defenders, 7 forwards, and substitutes. The game is divided into 4 quarters, each 15 minutes, between the first and second quarters and between the third and fourth quarters, each rests for 2 minutes, and the second and third quarters rest for 20 minutes. The game was played on a field 120 yards long and 160 feet wide. A goal line is set 10 yards before the end line, and the distance between the two goal lines is 100 yards.FM TV, The goal is set in the middle of the end line. The system is the same as that of rugby, but the American ball is slightly smaller than the British ball. During the game, a player takes the ball to the scoring zone in front of the opponent’s goal and scores 6 points; he can also kick another set kick . If the set kick is kicked over the opponent’s goal crossbar, another point is scored. In other situations, a shot is awarded. 3 points; the team player is squeezed out of the end line by the defender, and the defender gets 2 points.
In 1882, in order to stop Princeton and Yale from using the delaying strategy of “possession but not scoring”, the ball rule with limited offensive opportunities was applied. In 1883, under Camp’s suggestion, the number of players on the field was reduced to eleven, and the lineup of seven offensive lines, one quarterback , two halfbacks and one full back was also regulated . Kemp later died in a car accident while traveling to Canton, Ohio to attend a rule improvement meeting in April 1925. He played a major role in improving the rules of American football and separating it from the British style. He was regarded as ” “Father of American Football” (Father of American Football).
In the 1890s, interlocking formations, such as “flying wedges”, and teammates forcibly dragging the ball-handling players forward made rugby games very dangerous. Despite the adoption of restrictions on this type of formation and the introduction of other preventive measures, 19 players were injured and died in the game in 1905, reaching a historical record. In order to force the University to pay attention to his concerns about the safety of the game, the then President of the United States Theodore Roosevelt even threatened to force Congress to legislate football as a federal crime if there is no improvement.
American football 20th century
In 1906, two previously opposing organizations-the Intercollegiate Rules Committee and the Intercollegiate Athletic Association-met in New York and finally agreed on several new rules to make American football safer , Including the establishment of a neutral zone between the offensive and defensive lines, and each team must have at least 7 players lined up on the offensive and defensive lines, but the most important reform first push will legalize forward throwing. Funny USA,This case was extremely controversial at the time and was mocked by purists. In order to disperse the players during the game, Camp proposed to widen the stadium; but the representatives of Harvard University who participated in the meeting pointed out that their newly built Harvard Stadium did not have room for expansion, so they adopted a throwing proposal. This example also establishes the difference between American football and other football sports that evolved from rugby.
American colleges and universities started rugby early, and talented people appeared in large numbers. In 1876, Harvard, Yale, Princeton and Columbia four universities formed the first college football league in the United States . More than 600 college football teams in the United States belong to 60 football leagues. The most important management organization is the National Collegiate Athletic Association ( NCAA ).