BPAmoco is an international 
oil company formed in 
2001 by what was officially described as the merger of 
British Petroleum and 
Amoco to avoid competition issues. In truth, the event was a takeover and the company has reverted to the name British Petroleum.  
BP has also acquired Arco, once the Atlantic Richfield Company.  Previously British Petroleum had acquired Standard Oil of Ohio or Sohio.
 
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