Name the explorers who did not always sail under the flag of their native land. Under what nations' flags did these explorers sail?

Columbus, an Italian sailor, was funded by Spain. Another Italian, John Cabot, sailed under the English flag. Vespucci, an Italian explorer, sailed with a Spanish expedition. Magellan, a Portuguese sea captain, was funded by Spain. Hudson, an English captain, sailed on different expeditions under the Dutch and the English flags.