Answers edited by Peter

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• Why were political machines effective?
  
• What relationship between the earth and the sun causes the seasons to occur?
  
• What is the size of the observable universe in meters?
  
• How and why were most colonists cruel to the Indians?
  
• How long has the universe been expanding?
  
• Which of the four fundamental forces of nature is responsible for joining atoms together to form molecules?
  
• How does circumference of the sun differ from other stars?
  
• Explain the big bang theory as it relates to the atom and its evolution?
  
• What happens after two galaxies collide?
  
• How did the 1917 uprising against Czar Nicholas ll push the United States into entering WWI?
  
• What act said that all runaway slaves should be returned to their owners?
  
• What lies beyond the universe?
  
• What was the purpose of the Tea Act of 1773?
  
• During the Revolutionary War, what kinds of weapons were used used?
  
• How do gaseous planets form?
  
• Which time zone is farthest east?
  
• What is strong force?
  
• Is electrostatic force just one example of the electromagnetic force?
  
• How many planets typically surround one star?
  
• How does gravity work in space?
  
• What ways can we observationally probe what is happening inside of stars as they evolve off the main sequence and thereby directly test the predictions of stellar evolution theory?
  
• What was the most important reason for the Patriots' defeat of the British?
  
• Who was Jane Addams?
  
• How our galaxy will end?
  
• Question #4caac
  
• Question #8679d
  
• What happens to massive stars?
  
• During which battle did the confederate army reach a Turing point?
  
• Why did the U.S. want the Panama Canal?
  
• How many miles across is the universe? How is it measured?
  
• Why were the tenement apartments crowded?
  
• Why was the Civil War considered a turning point in American history?
  
• Why doesn't the government get to punish anyone it suspects of a crime in any way it wants? Why does it generally have to prove guilt?