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torsion siege engine
A torsion siege engine is a type of artillery that utilizes torsion to launch projectiles. They were initially developed by the ancient Greeks, specifically Philip II of Macedon and Alexander the Great, and used through the Middle Ages until the development of gunpowder artillery in the 14th century proved them obsolete.
== History ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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