Nigeria.
The US women's soccer team won the gold medal in the first ever women's soccer event.
They have won 4. In 1996, 2000, 2004 and 2008.
The United States Women's Soccer team won the Gold medal at the 1996 Olympics
Yes Argentina have won a gold medal at the Olympics.
Nigeria
Brazil
1996
There were no Winter Olympics in 1996.
United States won in the 2012 london Olympics
Argentina
Argentina