Quran is the Holy book of Muslims, it is widely recited in the whole world and it is the only one book in the world that is not altered and can't be altered. People from different religions and regions of world especially western people recite the translation of Holy Quran to get knowledge so that is the main reason it was translated into the English language. Not only in English language but also it was translated into several other languages that includes Persian, Turkish, Urdu etc.