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Make a claim stating how this invention changed the world for ancient people? Support this with evidence cited. 

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Make a claim stating how this invention changed the world for ancient people? Support this with evidence cited. 

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Have u ever wondered if the cannon was useful back in the ancient life??  Well the cannon was useful back in the ancient life.

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How has the invention changed over time?

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How has the invention changed over time?

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British engineer Sir William Armstrong developed the world’s first practical breech-loading cannon, manufactured in Britain from 1855. The Armstrong gun was constructed from wrought iron, built by shrinking successive layers of metal on top of each other. The resultant tube was stronger and more reliable than the conventional cast iron, and harder than bronze. It made rifling more practical. Armstrong cannon improved range and accuracy of rifled artillery.
http://idrw.org/evolution-of-howitzers-and-cannons-a-brief-history/

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"Cannon in general have the form of a truncated cone with an internal cylindrical bore for holding an explosive charge and a projectile. ... Field artillery cannon in Europe and the Americas were initially made most often of bronze, though later forms wereconstructed of cast iron and eventually steel."
https://en.wikipedia.org/wiki/Cannon

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"The powder is ignited by a timed fuse, which lights when the gun is fired. Shells are generally used to set fires. Rifled cannon fire cylidrical, bullet-shaped projectiles. ... The rifling spins the projectile as it is fired, improving accuracy and range."
https://www.nps.gov/fosu/planyourvisit/upload/how_does_a_cannon_work.pdf

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Why was it invented/how did it make ancient people’s lives easier?

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Why was it invented/how did it make ancient people’s lives easier?

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"The history of the cannon spans several hundred years. The cannon was invented in China as early as the 12th century and traces its development from the fire lance, the ancestor of cannons and firearms. ... English cannon were first used during the Hundred Years' War, at the Battle of Crécy, in 1346." https://en.wikipedia.org/wiki/History_of_cannon

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What does it look like? What is it made of? 

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What does it look like? What is it made of? 