Wealth September 8, 2016updated 26 Sep 2016 10:56am Billionaire makers: The cities growing the world’s wealthiest By Spear's New York has topped the list of cities where the most billionaires were born, according to analysis by WealthInsight and Spear’s magazine. Content from our partners Luštica Bay: The Adriatic’s most coveted address AI, growth and public policy: What is the future for Britain? Never tired of Whitehall Related Wealth Third of UK entrepreneurs explore early business sales after Rachel Reeves’ tax raid Wealth Does succession have to be fair and equal? How to divide an estate without family infighting Wealth Revealed: the best citizenship options to secure your child’s future success Spear's