In 1837, Fort Ann was constructed on the east coast of Merritt Island near the present day Haulover Canal, to protect the area against the Seminoles. Merritt Island's recent history dates back to the mid-19th century and centers on the growth of citrus, stressing the cultivation of pineapples and oranges. The Indian River oranges and grapefruit come from this sandy area. Freezes destroyed the local pineapple industry in the late 1890s. Freed slaves constructed small towns in the area after the Civil War, including Haulover, Clifton, and Shiloh.