Masters, Roger D. "What If Napoleon Had Not Invaded Russia? (1808)."
Divergence: 1808 CE
What if: Appendicitis and pneumonia prevented Napoleon from invading Spain in 1808, and reading Rousseau altered his tactics.
Comments: A more devious Napoleon leads France to world power by isolating Britain, having built up the French fleet and made alliance with Russia and America.
Published: In What If? Explorations in Social-Science Fiction (ed. Nelson W. Polsby), q.v.