It depends on which sort of trebuchet.
Traction trebuchets, operated by men pulling ropes, appeared in ancient China centuries before Christ; they appeared in Byzantium in the sixth century and spread to Europe.
Trebuchets using ballast -- the classic trebuchet -- came into use during the twelfth century in Europe.
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The earliest references to a weapon which is clearly of trebuchet type occur in Chinese texts from the 4th century AD.
The weapon had arrived in Europe around the 6th century AD, where it was increasingly refined, reaching its greatest importance probably during the general dynastic wars of the middle ages (such as the Hundred Years War 1337-1453).
But the trebuchet survived well into the gunpowder era: it's cheapness, repairability, accuracy and simple capacity for upscaling, offsetting its obsolescent technology.
It was probably last used extensively during the Thirty Years War (1618-48) - though it may have survived a little longer in specific campaigns.
The first reference was a 12th century description of its use by Saladin. Trebuchets are a type of catapult, using a counterweight to send contents of a sling toward a target. The Greek Dionysius the Elder of Syracuse, invented the catapult in 400 BCE.
It is thought that the first trebuchets were invented in the 5th Century BC. They were used by the Mohists in China.
Trebuchets were an effective battle technique. They used the force of a raised counterweight to fling heavy objects into the air. The projectiles were placed in a pouch or net then flung into the air in an attempt to hit the castle or soldiers.Although trebuchets were effective, they were large and cumbersome things that could easily be burnt down as they were made of wood.File:Trebuchet_Castelnaud.jpg
Twitter was invented.
No presedent invented it. This guy that was "cool" invented it for it standed forOll Korrect.
they invented it in medieval times.
There were many forms of hygrometers that were invented. The first one was invented by Nicolas Cryfts in 1450, however, where it was made is not mentioned.