The final stop on our six country tour is America, where we ask whether the famous land of opportunity still lives up to its promise. As the American dream has been exported throughout the world, does it still apply to people building their businesses here?

Marketplace's Lizzie O'Leary heads to Silicon Valley to find out if the boom can lift local aspirations when the new gilded age is so globalised. Krissy Clark then visits Ohio, where the promise of a previous century has evaporated. And in New York we look at how America stacks up against the world's emerging economies and ask how long it can continue to be number one.

Will the country remain the focus for the aspirations of the new global middle class? We hear from entreprenuers who have come to New York from around the world, hoping that that America is still the best place to make a modern fortune.