Why the IOC views Puerto Rico as its own country

This Saturday, the U.S. women’s volleyball team will play the Puerto Rico women’s volleyball team in the opening round of the 2016 Olympics in Rio. You might wonder why two groups of U.S. citizens would compete against one another. After all, the Olympic Games are an international competition that, through medal counts, measures how athletes from different countries perform.
Read more: http://www.si.com/olympics/2016/08/06/olympics-puerto-rico-united-states-ioc?source=Snapzu