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Many years ago, football used to be more disorganized and violent, with unclear rules and local variations. There didn’t use to be strict limits on the number of players, and they would often use both hands and feet. With the founding of the Football Association in 1863, the rules started to be standardized: there used to be 11 players, and they would no longer use their hands, with a referee overseeing the match. Football would become more tactical and less physical, evolving into the global and structured game we know today.

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Basketball has evolved from a simple game into a strategic, global sport with advanced techniques and specialized training. Once popular mainly in the U.S., it now has international leagues and greater NBA diversity. The sport is also a major cultural and fashion influence and a lucrative industry worldwide.

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Medicine used to focus on treating illnesses with limited technology, and patients had little access to health information. Today, advancements in technology and a better understanding of health have shifted medicine toward prevention and improved patient knowledge.

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Clothing used to be formal, made from natural materials, and reflected strict gender roles and social status, with slow-changing trends. Men typically wore suits, and women wore long dresses. Today, fast fashion has made clothing more accessible and flexible in style and gender expression, though there's growing awareness of sustainability and ethics in fashion.

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Tennis used to be less focused on technology, and players would rely on traditional wooden rackets. In the past, training methods were simpler, and players did not have advanced techniques. While they were practicing, they often had limited resources. Over time, equipment has changed, with lighter rackets improving performance. Training methods have become more sophisticated, and the style of play has evolved to be faster and more powerful. Media coverage has increased, making tennis more popular. The inclusion of women and diverse players has enriched the sport, while technologies like Hawk-Eye have improved officiating accuracy, transforming tennis into a more dynamic and accessible sport.