Every regional timeline on one shared axis. Where the lines separate, civilizations that shared a century did not share a level — the divergence the single world average cannot show.
Each line is one region's field — the root-mean-square of its worldview, political, and economic calibrations — across time. Read the vertical gaps: at any moment, the distance between two lines is how far apart those civilizations calibrated. Around 700–1300 CE, China (Tang–Song) and Persia (the Islamic Golden Age and the age of Rumi) ride high while the younger threads sit low — the divergence that a single world average erases. Lines begin where each region's record begins: Japan and China in deep antiquity, North America only at 1492. The time axis is compressed in antiquity and expanded toward the present so that coexisting civilizations have room to be compared; chronological order is exact, but spacing is not to scale. The gold line at 200 is the Coercion / Consent threshold. For the full era-by-era reading of any single region — with every calibration and transition — open its own timeline from the World page.