The island has a rich history that started with seasonal occupation by Native Americans thousands of years ago and continued with European exploration and the Sea Island Cotton trade. It became an important base of operations for the Union blockade of the Southern ports during the Civil War. Once the island fell to Union troops, hundreds of ex-slaves flocked to Hilton Head, which is still home to many of whom are descendants of freed slaves known as the Gullah (or Geechee) who have managed to hold on to much of their ethnic and cultural identity.