Original sentence: American football evolved as a separate sport from Rugby football in the early 20th century.American football, known in the United States simply as football, is a competitive team sport.Canadian football is essentially a form of American football.The object of the game is to carry the ball to the opposing team's end zone and score points.The team with more points when time has expired wins
Edited sentence: American football evolved as its own sport as it diverged from Rugby football in the early 20th century.American football, known in the United States simply as football, is a competitive team sport that is both fast-paced and strategic.Canadian football is also essentially a form of American football.However, football is also a complex game of managerial command and planning.It is one of the more physically demanding sports, with a great deal of physical contact occurring on each play, and requiring rare athletic talents in strength, speed, agility, and hand-eye coordination.The object of the game is to advance the ball to the opponent's end zone and thus score points.The team with the most points when time has expired wins