The Spanish assault on French Florida began as part of imperial Spain's geopolitical strategy of developing colonies in the New World to protect its claimed territories against incursions by other European powers. From the early 16th century, the French had historic claims to some of the lands in the New World that the Spanish called La Florida. The French crown and the Huguenots led by Admiral Gaspard de Coligny believed that planting French settlers in Florida would help defuse religious conflicts in France and strengthen its own claim to a part of North America. The Crown wanted to discover and exploit valuable commodities, especially silver and gold, as the Spanish had done with the mines of Mexico and Central and South America. The political and religious enmities that existed between the Catholics and Huguenots of France resulted in the attempt by Jean Ribault in February 1562 to settle a colony at Charlesfort on Port Royal Sound, and the subsequent arrival of René Goulaine de Laudonnière at Fort Caroline, on the St. Johns River in June 1564. The Spanish laid claim to a vast area that included the modern state of Florida, along with much of what is now the southeastern United States, on the strength of several expeditions in the first half of the 1500s, including those of Ponce de Leon and Hernando de Soto. However, Spanish attempts to establish a lasting presence in La Florida failed until September 1565, when Pedro Menéndez de Avilés founded St. Augustine about 30 miles south of Fort Caroline. Menendez had not known that the French had already arrived in the area, and upon discovering the existence of Fort Caroline, he aggressively moved to expel those whom he considered heretics and intruders. When Jean Ribault learned of the Spanish presence nearby, he also decided on a swift assault and sailed south from Fort Caroline with most of his troops to search for St. Augustine. However, his ships were struck by a storm (possibly a tropical storm) and most of the French force was lost at sea, leaving Ribault and several hundred survivors shipwrecked with limited food and supplies several miles south of the Spanish colony. Meanwhile, Menendez marched north, overwhelmed the remaining defenders of Fort Caroline, massacred most of the French Protestants in the town, and left an occupying force in the rechristened Fort Mateo. Upon returning to St. Augustine, he received news that