The business of sports in focus today with the power player summit underway here at Bloomberg headquarters and a big focus has been the embrace of women's sports. So let's look back in history at the biggest live women's sporting event of all time. Picture it.Mexico City, September 5th, 1971. Football teams from Denmark and Mexico facing off before a crowd of 110,000 fans at Aztec Stadium for Copa 71. An unofficial but monumental World Cup match.While women's international football or soccer as we call it h ...