Final answer:
The purpose of San Miguel de Gualdape was to establish a Spanish colony in the area of Spanish Florida.
Step-by-step explanation:
The purpose of San Miguel de Gualdape was to establish a Spanish colony in the area of Spanish Florida. The Spanish built this colony with the aim of expanding their territory and establishing control over the region. The colony ultimately failed due to a variety of factors, including conflicts with indigenous tribes and the destruction of the colony by French pirates.