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One word; Cannons.

Castles made of stone make perfect sense and are an excellent defense against arrows or swords. But a cannonball can knock holes in your stone walls, and then knock down the walls themselves.

After the development of cannons and artillery, "castles" changed shape; the new "anti-artillery castle" was the star fort, where you could position your OWN cannons to knock back the cannons that were shooting at you.

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11y ago

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