i think you mean antibiotic ... but Alexander Fleming was the one who advanced the antibiotic (world) and was responsible for creating these categories of medicine... this affected the 20th century because millions of people use antibiotics everyday and without them... many diseases would still affect people without a cure
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Among the advantages we can name the fact that across most Europe there are fertile soils, long river systems, the terrain makes traveling easy and therefore more open to trade since there are no physical borders.
However, this same factor turns into a serious disadvantage in times of war. The lack of physical borders makes countries easier to invade, as was probed in the numerous cities captured by the Nazi regime in WWII. Disease transmissions and undesired immigration are also a frequent problem with open borders.
Answer: The answer is a. Just took the test
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scurvy and pneumonia caused by a lack of shelter in the cold, wet weather.
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Many activists joined efforts to reform local government, public education, medicine, finance, insurance, industry, railroads, churches, and many other areas. Progressives transformed, professionalized, and made scientific the social sciences, especially history, economics, and political science.
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