US elections: Divided America decides on their 45th president

A polarised America is going to the polls to pick its 45th president, choosing to elect either Hillary Clinton as the nation's first female commander in chief or billionaire businessman Donald Trump after a long and rancorous campaign.

The winner will inherit an anxious nation, angry and distrustful of leaders in Washington. She or he will preside over an economy that is improving but still leaves many behind, and a military less extended abroad than eight years ago yet grappling with new terror threats.