Analysis of information sources in references of the Wikipedia article "Economy of the Confederate States of America" in English language version.
[...] when viewed in a broader context, the South appears materially successful, exhibiting the world's fourth highest per capita income in 1860 (Fogel and Engerman, 1974, p. 250). [...] only after the Civil War did the South's income fall far behind that of the rest of the United States.