"Golf course location and design also began to change. By 1914 over 90 percent of courses were inland and the golf course designer came into vogue, led by a quartet of early designers, such as the Heathland Quartet of Willie Park Jr. H.S. Colt, Herbery Forlwer, and J. F. Abercromby. Design and maintenance of grounds, the need for equipment, and operations led to a full-grown golf industry. British demand soon expanded around the world, with dramatic upsurges in gold courses and clubs in North America and continental Europe by 1900 as well as areas of British influence in Asia, Africa, South America, and Australasia. The expansion of golf also provided opportunities for young Scotsmen in particular. It has been estimated that more than 2000 Carnoustie men were hired as professionals by golf clubs around the world by 1900."