Dubbed "the Henry Ford of the home-building industry", Fred Trump started out at age 16 building a garage for his neighbour and went on to construct a staggering 27,000 low and middle-income houses and apartments in the outer boroughs of the Big Apple, not to mention one of the world's first supermarkets. Click or scroll on to discover how the controversial property baron pulled it off – and how he taught his favourite son the tricks of the trade and kick-started the Donald's career.