Which outcome accelerated the Song Dynasty's military advancement due to improved gunpowder?

💡 Explanation

The advent of gunpowder rapidly improved artillery, therefore facilitating the creation of metal-barrel construction (hand cannons) because higher explosive pressures could be contained with cast iron, rather than relying on weaker materials or rocketry breakthroughs.

• Which destructive outcome occurred when medieval stone catapults exceeded design thresholds?
• During the Song Dynasty, which outcome from cast iron cannons resulted if impurities raised the explosive burn rate of gunpowder propellant?
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