The invention of the printing press by Johannes Gutenberg in 1440 democratized knowledge. It made books accessible, fueling the Renaissance, Reformation, and Scientific Revolution.
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The discovery of gravity by Isaac Newton in the 17th century revolutionized physics. His laws of motion and universal gravitation laid the foundation for modern science and engineering.
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The discovery of penicillin by Alexander Fleming in 1928 revolutionized medicine. It was the first antibiotic, saving millions of lives and paving the way for modern treatments.
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