- 
  
  Columbus discovered America
 - 
  
  Greatbrittain fought France about the power on the ocean.
 - 
  
  It was cause for the American revolution.
 - 
  
  
 - 
  
  About 300 000 people went to calfornia to find gold.
 - 
  
  
 - 
  
  3,5 million slaves got freed