Christopher Columbus (1451- 1506) was a Genoese navigator and explorer. In the late fifteenth century, Columbus believed that it would be possible to reach the lucrative markets of eastern Asia by heading west, instead of the traditional route which went east around Africa. He convinced Queen Isabella and King Ferdinand of Spain to support him, and he set off in August of 1492. The rest is history: Columbus discovered the Americas, which had been unknown until then. All in all, Columbus made four different journeys to the New World.