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The rudder was invented in the 1200's
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The printing was invented in 1436 by a german named Johannes Gutenburg
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In 1496 the first paper mill come into operation in england
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The musket was developed in spain in the 1500
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In 1581 a man named Galileo invented the pendulum
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The first useful mircroscope was developed in netherlands between 1590 and 1608
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Sir John Harrington built a flush toilet for himself and his godmother
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In 1620 cornelis drebbel, a dutch inventor, built a leather covered rowboat with oars.
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In 1623 the spanish invented the first graded glasses.
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Gunpowder was invented around 850 A.D.
