We can be sure that ancient civilizations knew of and were concerned about infectious diseases from several facts. The hunter gatherers rarely suffered from water borne diseases. They knew that the water that stank or did not taste well was not good to intake. Their main knowledge came from experience. During the Greek period several doctors like Alcmaeon of Croton were mentioned and hence they must have had the knowledge about infectious diseases like Cholera. Several other infectious disease treatment have also been mentioned during the Greek period.
Missouri and Maine were the 2 new states.... Maine became a free state, and Missouri became a slave state.... the Compromise of 1820 is also known as the Missouri Compromise
Answer:
Isaac Newton, a worldwide known astronomer, physicist, mathematician and the creator of famous "Three Laws of Newton" brought up a metaphor of dwarfs standing on the shoulders of giants from the 12th century. The meaning of the above-mentioned metaphor is that people should discover truth based on previous experiences. The exact phrase Newton said in 1675 was that if he had seen further that was by standing on the shoulders of Giants.
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