Question: Can you please tell me what you know about the medieval invention the wheel barrow? 

Answer: History of Engineering: Wheelbarrow \nChuko Liang (181-234 A.D.) of China is considered to be the inventor of the wheelbarrow. Liang was a general who used the wheelbarrows to transport supplies injured soldiers. The Chinese wheelbarrows had two wheels and required two men to propel and steer.
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