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Graph of Hand cannon
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Hand cannon
Matchlock firearm
Gunpowder (black powder)
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Hand cannon
→
Gunpowder (black powder)
depends on
Early metal hand cannons still used gunpowder as their propellant.
Matchlock firearm
→
Hand cannon
evolved from
Mechanizing the external ignition operation of early handheld firearms marks a functional evolution from hand cannons to matchlocks; it does not imply direct transmission from a particular Chinese artifact to a particular European firearm.