II. Their explosive invention would become the basis for almost every weapon used in war from that point on, from fiery arrows to rifles, cannons and grenades. Gunpowder made warfare all over the world very different, affecting the way battles were fought and borders were drawn throughout the middle ages.
III. Gunpowder did change the war in many ways. Gunpowder was quickly put to use by the reigning Sung dynasty against the Mongols, whose constant invasions into the country plagued the Chinese