not quite sure about 2000, but in 2004 it was USA
Mia Hamm won gold at the 1996 and 2004 Summer Olympics. She also won silver at the 2000 Summer Olympics.
The USA won the 2000 Olympics with 39 Gold, 25 Silver and 33 Bronze, for a total of 97 medals The USA won the 2004 Olympics with 39 Gold, 25 Silver, and 33 Bronze for a total of 103 medals
Great Britain.
Romania
Men - Cameroon Women - Norway
She won a Gold Medal in the 10 M Platform at the 2000 Olympics in Sidney and finished 5th in 2004 for the event
Eritrea. The medal was bronze, not gold, and it was won by Zersenay Tadesse in the 10,000 metres.
USA team won the women's basketball gold medal in 2004 Olympics.
Ben Ainslie has won four Olympic gold medals in sailing. He won gold in the Laser class at the 2000 Sydney Olympics, and then went on to win three consecutive gold medals in the Finn class at the 2004 Athens Olympics, 2008 Beijing Olympics, and 2012 London Olympics.
The United States in the team competition.
The US women's team has won five gold medals in basketball in the Olympics: 2004, 2000, 1996, 1988, 1984
The United States won the most medals at the 2004 Summer Olympics with 102: 36 gold, 39 silver, and 27 bronze.