258) The invention of Gun Powder by ......revolutionized the art of warfare and became an important factor for the beginning of modern period

259) The _____, was an instrument which indicated direction and helped the daring navigators, who explored new lands which later changed the very face of the Earth.

260) _____ is the name given to the great religious revolt of the 16th century, which permanently divided the Christendom into great sects.

261) In his book, ′In praise of folly′, _____ bitterly denounced the worldliness and vulgarity of the churchmen and ridiculed superstition.

262) ........ the English priest who is called as ′the Morning Star of Reformation′