Answered by Hank
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Apr. 11, 2015 01:30
Hennie, they firstly input gun powder into the cannon and the put the ball inside. The ball can be made of iron with gunpowder and other ingredients. Then there is a fuse to connect the gunpowder. Once the soldiers ignite the fuse, the gunpowder will explode. As a result, the ball flies out of the cannon. Once the ball reaches the battlefield, it explodes to cause casualties.