The journey of humanity from poverty to prosperity is filled with men who have become household names: from Giovanni de Medici, Cornelius Vanderbilt, John D. Rockefeller and Henry Ford to Warren Buffet, Mike Bloomberg, Lakshmi Mittal and Jack Ma. But how many female entrepreneurs, merchants and industrialists can you name? You would be forgiven for thinking that, until very recently, there were none at all. After all, even today, if we gathered in one room all those who have gone from rags to riches, it would be a room full to the brim with men: less than three per cent of the world's...