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The dark ages and middle ages went from 400-1400 AD
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Spanish explorer Hernando de Soto discovered the Mississippi River
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Dutch lens grinder Zacharius Jannssen invents the microscope
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John Smith founded the Jamestown Settlement
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William Harvey publishes An Anatomical Study of the Motion of the Heart and of the Blood in Animals, describing how blood is pumped throughout the body by the heart, and then returns to the heart and recirculates
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Doing experimenting on dogs, Sir Christopher Wren was the first to administer medications by means of an animal bladder attached to a sharpened quill. Wren also experimented with canine blood transfusions
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Anton van Leeuwenhoek refines the microscope and discovers blood cells and observes animal and plant tissues and microorganisms
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Charles Town was founded
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Louis Jolliet and Jacques Marquette began to explore the Illinois Country
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The Dominion of New England was established
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War of the Grand Alliance
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First Great Awakening
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James Lind , a naval surgeon, discovered that citrus fruits prevent scurvy
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James Lind publishes his "Treatise of the Scurvy" identifying the cure for this common and dangerous disease of sailors
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French and Indian War
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Battle of Bunker Hill
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The Bank of North America was chartered
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James Blundell performs the first successful transfusion of human blood
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Elizabeth Blackwell is the first woman to receive a medical degree
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Dr. Horace Wells uses nitrous oxide as an anesthetic
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First vaccine for cholera
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First vaccine for anthrax
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First vaccine for rabies
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Emil von Behring discovers antitoxins and uses them to develop tetanus and diphtheria vaccines
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German physicist Wilhelm Conrad Roentgen discovers X rays
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Marie Curie isolated radium
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First vaccine for typhus
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First vaccine for influenza
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Paul Zoll develops the first cardiac pacemaker to control irregular heartbeat
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First vaccine for measles
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Dr. Christiaan Barnard performs the first human heart transplant
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First vaccine for mumps
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First vaccine for chicken pox
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First test-tube baby is born in the U.K.
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Persian physician Rhazes is the first to identify smallpox, as distinguished from measles, and to suggest blood as the cause of infectious disease