The Everglades once blanketed a quarter of Florida. Stretching from Lake Okeechobee to Florida Bay, its saw grass prairies, mangrove swamps, and hammocks were home to a profusion of animals, plants, and prehistoric Native Americans, as well as Seminoles, Miccosukees, and Gladesmen of historic times. In 1904, Napoleon Bonaparte Broward ran for Florida governor with the political platform of creating farmland by dredging the Everglades and spilling its water into the ocean. By 1914, this spectacular natural feature was on the verge of destruction, and environmentalist May Mann Jennings led a grassroots movement to preserve Royal Palm Hammock. In the 1930s, Ernest Coe and Marjorie Stoneman Douglas fought to preserve a larger area, culminating in the creation of Everglades National Park in 1947.