Answer:
Reducing the threat of French privateers
Step-by-step explanation:
Fort Caroline was a French colony that was located in the US, it was built as a refuge for the Huguenots that were members of the Protestant Reformed Church of France, Catholics, and agnostics.
At the same time, Spain was spreading its influence in South and Central America through its sea routes. This sparkled uneasiness into the Spanish that was concerned with the French settlement because the Spanish needed the Florida coast.
Because of that, Spanish Admiral Pedro Menendez attacked the colony, about 350 men were killed.