Answers created by Jazz

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• How did astronomers originally calculate the distance between the earth and the sun?
  
• What book did Hitler write while in prison in 1923-1924, in which he laid out his plans for promoting the master Aryan race through extreme nationalism, racism, and anti-Semitism?
  
• What is a bad effect of spraying a chemical pesticide on crops?
  
• What type of inventions contributed to the rise of the industrial Revolution?
  
• What impact did the formation of NATO and the Warsaw Pact have on military spending?
  
• Why do viruses mutate?
  
• Why were many Russians unhappy with Tsar Nicholas Il?
  
• What effect did the Cuban Missile Crisis have on the United States?