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The ancient Sumerians in Mesopotamia used a complex system of canals and levees to divert water from the Tigris and Euphrates rivers for irrigation. Continuing enhancements led to the furnace and bellows and supplied, for the first time, the ability to smelt and forge gold, copper, silver, and lead – native metals present in comparatively pure form in nature . The advantages of copper tools over stone, bone, and picket instruments were rapidly apparent to early humans, and native copper was most likely used from near the start of Neolithic times . Native copper does not naturally happen in large amounts, but copper ores are quite common and a few of them produce metal simply when burned in wood or charcoal fires. Eventually, the working of metals led to the invention of alloys similar to bronze and brass . The first makes use of of iron alloys corresponding to steel dates to around 1800 BCE. You may want to begin by working in a photo voltaic merchandise firm to become knowledgeable w