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3.3 million years ago the first tools were made. Sharp flakes of stone were used as knives. Larger unshaped stones were used as hammers. These tools have been uncovered at Lake Turkana in Kenya
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The first sailing ships were used on the Nile River. These ships used oars for navigation
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production of iron became widespread. Iron was much more abundant than copper and tin
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fire was first made by Homo sapiens. Evidence of burnt materials can be found in caves
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China invented gunpowder as a way to propel rockets attatched to arrows
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5000 years after the first sailing ships, the wind was used to operate a mill. The first windmills were in Persia.
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The first mention of a windmill was in a Chinese book in 1044. The compass was a way for soldiers to find their way back when the sky was to foggy to see the stars
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The first mechanical clocks appeared in Europe and were used in cathedrals to mark the time when services would be held.
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In 1826 or 1827, he made an eight-hour-long exposure of the courtyard of his house, the first known photograph.
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. Alexander Graham Bell made the first telephone call, on March 10, 1876, when he asked his assistant Tom Watson to come to him: “Mr Watson—come here—I want to see you.”
