Christian and Muslim opposition

Why is there a huge debate, of fight, or argument between the Christian and muslims, just enough as if with any other religons there is always going to be a controversy... there is many stereo type feelings that Christians in general have agaisnt other countries and religons, but is it really true that most muslims in the very deep part of there belief, hate Christians, also the buddist and hindu, but most of anything i see and hear more about he Christian an Muslims, if its from history to now... it does not make sense, just as much why does christianity or prodestants have so many different beliefs and so on.... is there a truth behind the division of Gods' people in general.