Minnesota's 4-H clubs grew out of the boys and girls clubs in the early 1900s. The first 4-H symbol, in 1907, was a three-leaf clover, for head, heart and hands. The fourth leaf was added in 1911 to symbolize health (resistance to disease, enjoyment of life and efficiency). In 1914, the Smith-Lever Act brought 4-H into Extension nationwide. By the early 1920s, the clubs were known everywhere as "4-H clubs."? By immersing kids in learning and leadership activities and instilling a healthy spirit of competition through project judging, 4-H contributed directly to the nation's leadership position in world agriculture and other industries.