Question

Why did the Spanish build the St. Augustine fort in Florida? to engage in the fur trade with the natives to protect their sea route to the Caribbean to capture natives and send them as slaves to the Caribbean to profit from the gold and silver mines in the region

Answer 1

The main reason why the Spanish built the St. Augustine fort in Florida was "to protect their sea route to the Caribbean" since this was a crucial port for many engaged in trade within the Caribbean.