This chapter considers three impulses of the post-World War II era. Two of them deal with the economy, bracketing its course from an inspiration flowing out of the war through an ideological and policy retake a generation later. The other impulse covers one of the major developments of American, not to mention transnational, history—the civil rights revolution of those times. In the three impulses detailed here, economic planning devices, energy supply, the cities, travel, infrastructure, the tax code, industrial structure, the workplace, immigration, demographic patterns, the electorate, rights standards, and relations among the races, gained lasting imprints from U.S. government participation, among others.