The work on this chart is amazing. Of course, due to its old age it is imperfect but it’s still impressive.
“The chart emphasizes domination, using color to show how the power of various “peoples” (a quasi-racial understanding of the nature of human groups, quite popular at the time) evolved throughout history. It’s unclear what the width of the colored streams is meant to indicate. In other words, if the Y axis of the chart clearly represents time, what does the X axis (marked as “relative power of contemporary states, nations, and empires”) represent? What’s the meaning of “power” to the mapmaker? And did Sparks see history as a zero-sum game, in which peoples and nations would vie for shares of finite resources? Given the timing of his enterprise—he made this chart between two world wars and at the beginning of a major depression—this might well have been his thinking.”
First published in 1931, this ambitious “Histomap” by John B. Sparks attempts to distil four thousand years of world history starting in 2000 B.C. The histomap was first printed by Rand McNally . It sold for $1 and the five foot long map was folded into a green cover. […]