Many of the whites and free people of color who left Saint-Domingue for the United States settled in southern Louisiana, adding many new members to its French-speaking, mixed-race, and black populations. The exiles causing the greatest amount of alarm were the African slaves who came with their refugee owners. Some southern planters grew concerned that the presence of these slaves who had witnessed the revolution in Haiti would ignite similar revolts in the United States. Other planters, however, were confident they had the situation under control.