Which failure sharply raised risk to early explosive cannons?

💡 Explanation

Early cannons were prone to breech explosions because of inadequate **gas sealing**, causing uncontrolled release of high-pressure propellant gases during firing sequence, rather than the projectile jamming or recoil because incomplete combustion creates uneven pressure.

• Which purpose was promoted earlier by the use of torquetum?
• Which operational challenge increased when Greek fire ignition failed at sea?
• Which unintended consequence occurred because of the delayed ignition impacting effectiveness of the Congreve rockets during Napoleonic Wars?
• Which risk increases when an ancient Incan agricultural terrace experiences sustained freeze-thaw cycles?
• Which consequence accompanied seasonal flooding tolerance when Ur's canal junctions failed?
• Which focusing improvement occurred when Islamic scholars refined Ptolemy's optics?