Why might a captain like Martin Alonso Pinzon be a problem for Columbus?

Martin Alonso Pinzon could be a problem for Columbus due to his ambitious nature and desire for personal glory. As a skilled navigator and experienced sailor, he may seek to assert his own authority and pursue his own interests, potentially undermining Columbus's leadership. His rivalry and desire for recognition could lead to conflicts over decision-making and resource allocation during their voyage, jeopardizing the mission's unity and success.