ACCorDing to thE pAssAgE, it is thE tElEphonE thAt______.
A．hAs mADE lEttEr writing An Art
B．hAs prEvEntED wArs By AvoiDing writtEn CommuniCAtion
C．hAs mADE thE worlD DiFFErEnt From whAt it wAs
D．hAs CAusED wArs By mAgniFying AnD ExtEnDing humAn ConFliCts