Because he intended to demonstrate to the King and Queen of Spain that he had gained new Catholic adherents.
Christopher Columbus started his career as a young seaman in the commercial marine of Portugal.
He managed to secure the support of Ferdinand II and Isabella I of Spain in 1492 in an effort to reach Asia by sailing westward over what was thought to be open water. With three ships—the Santa Maria, the Nia, and the Pinta—he set out on his first journey in August 1492.
On October 12, he discovered land in the Bahamas. In 1493, he sailed around Hispaniola's northern coast on his way back to Spain. He was sent back to Spain in chains due to allegations of inadequate management.
His aspirations of grandeur and enormous wealth were not realized. Although his character and accomplishments have long been disputed, most academics concur that he was a daring and exceptional navigator.
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