The Wheelbarrow: An Invention That Influenced Labor The creation of the wheelbarrow changed the immensely simple and practical tools at our disposal. The wheelbarrow is ubiquitous in construction and gardening, so much so that the average person has never contemplated the invention of the wheelbarrow. The wheelbarrow is almost two thousand years old and has its origins in ancient China. The first wheelbarrows were created around the first and second century AD during the Han Dynasty in China. Han dynasty murals in the Sichuan province from around 118 AD, illustrate the presence of a cart with a wheel in the front that was pushed by a person. This is the earliest visual evidence of the wheelbarrow. Written records from the Han Dynasty that are found in the same location corroborate the murals, suggesting that the wheelbarrow was in wide use and practice by the first century AD in China. The Chinese believe that the person who invented the wheelbarrow was Zhuge Liang. Zhuge Liang was a military strategist and leader during the Three Kingdoms era in the 3rd century AD. Historical records suggest that he developed a cart that was more efficient than older model supply carts. Although Zhuge was developing carts, supply and logistics were extremely important and thus the wheelbarrow was a fully developed invention of China during the Han dynasty. What makes the Chinese innovation of the wheelbarrow so great is the location of the wheel. Later European versions of the wheelbarrow would place the wheel at the front. The Chinese design placed the wheel at the center. This way, the wheel carried the burden so the user carried none and this burden would otherwise require several people. Mobility of labor was the greatest of the several benefits of this design. This is attributed to the spatial efficiency of Chinese ingenuity. The only European trade with the Chinese at the time was of goods and ideas. The Chinese would not sell any ideas. This is likely why the wheelbarrow was wrought independently in the European countries. The first records of the European versions of the wheelbarrow would appear in the 13th century. This would be in the manuscripts and the stained glass of Gothic architecture of the Europeans. The found in of mobility of labor of the Chinese version does not appear in the medieval European version. In the medieval European version, the wheel was moved to the front for added maneuverability to pieces of the building. The adaptation of the wheelbarrow in both China and Europe lacks substantial evidence to how the design got in to medieval Europe. The ideas of the inscribers and the craftsmen may have moved along the trade routes. This would be modern gateway of ideas that this design would otherwise be lost in. Despite some uncertainty on other aspects, the influence of the wheelbarrow on manual labor is definite. It lessened the burden of carrying out construction, agriculture, and mining work for centuries, no matter the culture and no matter the epoch. Before the wheelbarrow and similar devices arrived on the scene, moving a heavy load was the exclusive domain of a man's arms and back. The wheelbarrow changed the equation in a very transportative way, increasing the load a single worker could carry numerous times. Today, the wheelbarrow still retains its Medieval European design and is still in use, which is indicative of how the solution continued to address the design challenge.