The name for the machine used by Genghis Khan's armies for hurling large stones and projectiles is Trebuchet. Option A. This is further explained below.
<h3>What is Trebuchet?</h3>
Generally, Trebuchet is simply defined as a medieval siege weapon used to throw huge stones or other projectiles.
In conclusion, During the reign of Genghis Khan, his forces used a weapon known as the Trebuchet to throw massive stones and other missiles into the air.
