when did the game first begin?
The earliest form of the game started during the Han Dynasty (206 BC-220 AD).
Association football
According to FIFA, the Chinese competitive game "cuju" (蹴鞠, literally "kick ball") is the earliest form of football for which there is evidence. "Cuju" players could use any part of the body apart from hands and the intent was kicking a ball through an opening into a net. It was remarkably similar to modern football, though similarities to rugby occurred. During the Han Dynasty (206 BC – 220 AD), "cuju" games were standardised and rules were established.

how many premier league titles have man u won Twenty League titles. what is manchester united f.c.? A professional football club . where is the club based in? Old Trafford, Greater Manchester, England.
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Association football [SEP] History
Athenaeus, writing in 228 AD, referenced the Roman ball game "harpastum". "Phaininda", "episkyros" and "harpastum" were played involving hands and violence. They all appear to have resembled rugby football, wrestling and volleyball more than what is recognizable as modern football. As with pre-codified "mob football", the antecedent of all modern football codes, these three games involved more handling the ball than kicking. Other games included "kemari" in Japan and "chuk-guk" in Korea. Association football in itself does not have a classical history. Notwithstanding any similarities to other ball games played around the world FIFA has recognised that no historical connection exists with any game played in antiquity outside Europe.