Haitian immigrants have constituted a very visible segment of American and Canadian society, dating back to before the independence of Haiti from France in 1804. Haiti's proximity to the United States, and its status as a free black republic in the years before the American Civil War, have contributed to this relationship. Many influential early American settlers and black freemen, including Jean Baptiste Point du Sable and W. E. B. Du Bois, were of Haitian origin.