In America, political majorities live or die at the intersection of two public yearnings: for freedom and for order. A century ago, in the Progressive Era, modern American liberalism was born, in historian Robert Wiebe's words, as a"search for order." America's giant industrial monopolies, the progressives believed, were turning capitalism into a jungle, a wild and lawless place where only the strong and savage survived. By the time Roosevelt took office during the Great Depression, the entire ecosystem appeared to be in a death spiral, with Americans crying out for government to take control. F.D.R. did — juicing the economy with unprecedented amounts of government cash, creating new protections for the unemployed and the elderly, and imposing rules for how industry was to behave. Conservatives wailed that economic freedom was under assault, but most ordinary Americans thanked God that Washington was securing their bank deposits, helping labor unions boost their wages, giving them a pension when they retired and pumping money into the economy to make sure it never fell into depression again. They didn't feel unfree; they felt secure. For three and a half decades, from the mid-1930s through the '60s, government imposed order on the market. The jungle of American capitalism became a well-tended garden, a safe and pleasant place for ordinary folks to stroll. Americans responded by voting for F.D.R.-style liberalism — which even most Republican politicians came to accept — in election after election. (Read a TIME cover story on F.D.R.)