A) When Islam established itself students started to come from all over the world, from places far enough like Iran, or Uzbekistan or India or Egypt etc and their mother tongue was not Arabic so they were writing parts of Quran with other material like jurisprudence or explanation etc and when these students went back .,during the long travel the material got ripped or damaged due to rain so some had left less and others who had written more on some material ie.,camel hide etc had upon their death had left confusion for their survivors to think this as the Quran. Then there was problem of accent, In Egypt J is pronounced as G and e.g in English word Uthman(Arabic) is read as ottoman while in Urdu as Usman. Now all the three pronounciations are for same one person called Uthman but only uthman should be used.Therefore compilation of Quran in writing was done in time of Uthman caliph who ordered all outside of this copy to be burned. This copy was compiled by all those who were present in time of Prophet Muhammad and with him as his disciples and were local from the same area so no confusion in pronunciation or even dialect. So the Quran you have in your hands today is the same that was taught by Prophet Muhammad. Some critics use the word “under Govt influence” when they say compilation of Quran was done under caliph Uthman time. But they say it because in west the concept of Govt control is no permission of difference of opinion, we see how police deals with people in west, how so many blacks were executed only on suspicion proved to be wrong latter etc. And no one can speak against police brutality neither judicial system, nor electoral system and neither media. This police is just one small organ of the govt and this is 21st century! While In Islam the caliph was fearful of God all the time thinking any mistake may not happen and was afraid how he will have to reply to God on day of Judgement. This feelings can’t be even imagined in west. So those who criticize compilation of Quran with this cover simply don’t know the nature of the govt in times of Caliph.