All of the following were developed by the sumerians to increase the power of their armies, except a. gunpowder b. bronze weapons c. city walls d. war carts select the best answer from the choices provided a b c d

Why are slanted roofs found on many buildings within russia and finland? a. to prevent ice slides. b. to prevent the build-up of water during heavy rains. c. to prevent heat from escaping during the clod winter months. d. to prevent snow build-up.