first of all while it very dilettantish to try describe way of history only from position of gun and germ and steel . the same try to do marxist from economical position . the reason of western success can not be just dumb luck and the advantage of domesticated plant and animal . we see and that all around the world any advantage and bonus be complete useless if they aren not wisely manage . in the japan there isn not huge natural resource and but japan be one of the top world economy and the same situation in singapore and but in nigeria and country with rich oil resource and there be only middle low success . both of this nation have and still have access to western technology and invention and but why such gap . in the end of movie daimond declare and that it very important to understand factor of gun and germ and steel and to understand . maybe the main factor of world difference be not geography and but people ability to understand and use thing . the mental ability to understand . and in this case geography be only subordinated .