Final answer:
Christopher Columbus named the island he landed on in the Bahamas 'San Salvador' during his 1492 voyage, mistakenly believing he had reached the East Indies.
Step-by-step explanation:
The admiral in question is Christopher Columbus, who landed on an island in the Bahamas during his voyage in 1492. After landing on this island, Columbus named it San Salvador. Back then, he held the erroneous belief that he had reached the East Indies and, as a result, called the native people he encountered there Indios, which led to the term 'Indian' being used for the native inhabitants of the New World. Further exploration by Columbus included reaching Hispaniola, an island that is today known as the Dominican Republic and Haiti.