 The deerskin trade grew, and by the 1750s, Savannah exported up to 50,000 deerskins a year.In 1736, Spanish and British officials established a neutral zone from the Altamaha to the St. Johns River in present-day Florida, guaranteeing Native hunting grounds for the deerskin trade and protecting Spanish Florida from further British encroachment.Ca.1750 a group of Ochese moved to the neutral zone, after clashing with the Muskogee-speaking towns of the Chattahoochee, where they had fled after the Yamasee War.