4) Wheel:
Image Credit: Pixabay
Try imagining modern society without the wheel. What do you see? A world without the wheel would be radically different. Although the wheel was invented rather late in human history, with most evidence pointing to date around 3,500 years ago, its impact was immediate. The invention of the wheel revolutionized the way human beings traveled and transported items from one place to another. Additionally, the wheel soon found extended use in irrigation and milling. Without a doubt, the late invention of the wheel stands as one of the great achievements of mankind.
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