The American Civil War was a visible acceleration point rather than the absolute beginning of ironclad development. Armour, turrets, more powerful guns, and improving steam engines came together and reinforced one another. Once navies entered that cycle, each improvement created pressure for the next round of larger and more capable ships. The broad path ran from ironclads through Royal Sovereign-style battleships to dreadnoughts. The outcome was not predetermined in detail, but technological momentum would continue until naval design reached a new plateau.
Notable Point · 51:45-53:30
How ironclads started a long naval technology cycle
The American Civil War accelerated the combination of armour, turrets, heavier guns, and steam power, but those technologies had already begun a development cycle that continued toward modern battleships.