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The ability to rapidly reproduce HeLa cells in a laboratory setting has led to many important breakthroughs in biomedical research. For example, by 1954, Jonas Salk was using HeLa cells in his research to develop the polio vaccine.
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They improved water travel and encouraged trade.
They made it possible for goods to be shipped upriver from major cities.
They allowed for larger quantities of supplies and materials to be shipped.
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<em>The invention and use of the printing press in Europe was important for the Renaissance because it allowed new ideas and worldviews to spread across the continent more easily. Therefore, the invention of the printing press allowed these new ideas to spread and further enhance the overall Renaissance.</em>
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Zamindars were local mogul officials who kept part of the taxes in lieu of a salary. Zamindars were the <span>of demarcated areas, responsible for collecting revenue for the monarchy and rose into prominence during the British colonial era, owing to the opportunity availed by the British in India.</span>