<human>:  What is the history of football?
<bot>: Football has been transformative in modern history. It is one of the most popular sports in the world, with millions of players worldwide. The roots of football can be traced back to ancient Greece and Rome, where games resembling football were played, but the modern game of football is generally accepted to have originated in England in the mid-19th century. The British settlers and expatriates are credited with popularizing the game in the new world, particularly in the US. By the early 20th century, the sport had gained immense popularity in Europe and South America. Today, football is one of the most popular sports and is enjoyed in many parts of the world.