American swimmer Michael Phelps has become the most decorated Olympian in history.
Olympic Swimmer Michael Phelps
![Michael Phelps of the U.S. celebrates winning gold in the men's 100m butterfly final during the London 2012 Olympic Games at the Aquatics Centre, August 3, 2012.](https://gdb.voanews.com/504566B2-476D-4AA3-9BD8-BC300EFABDF5_w1024_q10_s.jpg)
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Michael Phelps of the U.S. celebrates winning gold in the men's 100m butterfly final during the London 2012 Olympic Games at the Aquatics Centre, August 3, 2012.
![Qurban bayramı namazı - İndoneziya, Cakarta, 15 oktyabr, 2013](https://gdb.voanews.com/3F60AFAC-CBD9-4898-A123-A07084E75D67_w1024_q10_s.jpg)
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Qurban bayramı namazı - İndoneziya, Cakarta, 15 oktyabr, 2013
![United States' Michael Phelps poses with his gold medal for the men's 4x200-meter freestyle relay swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, July 31, 2012.](https://gdb.voanews.com/2F0AE93A-6C51-483F-B737-9C3F00A9E383_w1024_q10_s.jpg)
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United States' Michael Phelps poses with his gold medal for the men's 4x200-meter freestyle relay swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, July 31, 2012.
![From left, Michael Phelps, Conor Dwyer, Ricky Berens and Ryan Lochte pose with their gold medals for the men's 4x200-meter freestyle relay swimming final at the Aquatics Centre in London, July 31, 2012.](https://gdb.voanews.com/83A6EE74-EA68-4015-9549-74E70914109D_w1024_q10_s.jpg)
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From left, Michael Phelps, Conor Dwyer, Ricky Berens and Ryan Lochte pose with their gold medals for the men's 4x200-meter freestyle relay swimming final at the Aquatics Centre in London, July 31, 2012.