The 2016 U.S. election campaign is unusual on many fronts, but one aspect of it is truly historic. For the first time, a major party has nominated a woman - Democrat Hillary Clinton - as its presidential candidate. But what took so long to reach this milestone, in a country at the forefront of efforts to promote women's empowerment and advancement around the world? And how do assumptions about a woman's role affect the public's response to a female candidate? Keida Kostreci has more.