World War I & Prohibition (Third Turning, 1908–1929) was an era of rapid technological change, egocentric celebrities, widening class divisions, crumbling trusts and unions, and expert—but weak—political leadership. Following World War I, the public immersed itself in moral crusades (League of Nations, Prohibition, Women Suffrage). By the ‘20s, a fun-filled financial boom was framed by pessimistic debates over drugs, sex, money, cynicism, violence, immigration, and the family.

• Progressives entering elderhood
• Missionaries entering midlife
• Lost entering young adulthood
• G.I.s entering childhood