The large segment of the Haitian population that is unable to read or write inhabits an oral history culture, which produces, when looking into the past, a curious foreshortening. First comes the Haitian Revolution of 1791-1804, the only successful slave revolution in history and an event with whose fundamentals practically all Haitians are reasonably conversant. Then there’s a compressed, indeterminate period of confused and repetitious instability, ending with President Woodrow Wilson’s decision in 1915 to use the collection of outstanding American and French loans as a pretext for installing Marines in Haiti to prevent the election of an anti-American president.