In his first journey, Columbus visited San Salvador in The Bahamas (which he was convinced was Japan), Cuba (which he thought was China) and Hispaniola (where he found gold).
That made us think, what made him think so? In the mean time, Cerberus came up with a helpful map of his journey, but we could not conclude anything from here. So does anybody has any information on this? We would really like to know.
The Map is uploaded separately for the users convenience.