How would the twentieth century change if France had completed the Panama Canal around 1900?
Short answerFleet mobility would improve earlier, but the main difference would be a prolonged contest over French ownership, equal tolls, U.S. influence, and wartime control of the canal.
NotesA French completion around 1900 would connect the Atlantic and Pacific sides of the American fleet earlier. French benefits would depend on retaining control and collecting enough toll revenue to recover the investment. The participants differ over how much wider change follows: ownership could strengthen French finances while also creating friction with American interests in the region. They consider a later sale to help pay war debts, or American control after France's defeat in 1940, as possible routes to another ownership change. The scenario leaves the long-term result conditional on control and finance.