Age of Discord II examines how long-term changes in popular well-being, elite competition, state capacity, and political violence interact in American history. Historical series spanning 1780–2010 make it possible to compare the instability of the late nineteenth and early twentieth centuries with pressures that began accumulating again after the 1970s.
The Research Problem
Structural pressures beneath political events
The project began with a shift visible in the United States after the 1970s. Broad gains in well-being slowed or reversed, economic inequality grew, and cooperation within and between elites weakened. As elite fragmentation intensified, political institutions appeared increasingly unable to resolve collective problems.
Structural-demographic theory places these developments in a longer comparative history.
Historical Record
Political instability in America, 1780–2010
The historical series records instability events in which at least one person was killed. It shows sharp peaks around the Civil War era, approximately 1920, and 1970, superimposed on slower changes in the background level of political violence.
The extended turbulence from roughly 1860 to 1920 is described here as Age of Discord I. The purpose of the comparison is not to claim that American history repeats mechanically, but to ask whether renewed increases after 1960 reflect pressures similar to those associated with the earlier wave.
Popular Well-Being
Several measures move together over the long run
Population well-being cannot be represented by a single number. The original analysis therefore compared employment prospects, wages relative to output per person, biological well-being, and family formation. Although each series measures something different, their long-run movements share a broad pattern.
Well-being declined through much of the nineteenth century, improved markedly during the first half of the twentieth, and turned downward again after the postwar high point. The convergence of independent indicators is more informative than any one proxy considered alone.
Elite Dynamics
Competition intensifies when aspirants outgrow positions
Elite overproduction refers to growth in the number of wealthy or credentialed aspirants relative to the limited number of high-status positions. Structural-demographic theory expects this imbalance to increase competition within economic and political elites and to weaken cooperation.
The original analysis used three distinct proxies: the scale of the largest private fortunes relative to median income, the cost of elite education relative to median income, and congressional polarization as an indicator of intra-elite fragmentation. Their common movement is summarized by the gray line.
Structural-Demographic Pattern
The double spiral of well-being and elite overproduction
When the composite trends are plotted together, popular well-being and elite overproduction appear as near mirror images. The pattern is notable because the two curves are assembled from separate indicators rather than different transformations of the same data.
Structural-demographic theory connects this double movement to political stress: weakening popular well-being and intensifying elite competition can reinforce one another while placing additional demands on state institutions.
Interpretation
Historical comparison is not a claim of inevitability
The recurrence of broad patterns does not determine a single outcome. Institutions can adapt, coalitions can change, and reforms can reduce the pressures that have produced violence in other periods. Structural-demographic analysis is intended to identify mechanisms and warning signs, not to announce an unavoidable repetition of the Civil War.
The historical series end around 2010 and should be interpreted within that time horizon. Subsequent publications extend structural-demographic analysis to additional periods and societies and examine how institutional adaptation, reform, and state capacity can alter periods of mounting political stress.
