Age of Exploration

What do you believe were the primary motives and preconditions that prompted European overseas exploration in the 15th and 16th centuries? motives: -shorter route to asia -God (religious reason) -Gold (money) -Glory (fame) -attraction to other lands beyond Europe preconditons: -greater, political centralization -new seaworthy ships: i.e sails (from square shape to triangle shape), and maneuverability (like sternpost rudder), also greater carrying capacity -new navigational aids – knowing the wind patterns of the Atlantic Ocean -improved cartography Reference if possible: Christopher Columbus journal entries, specifically the introduction, and the dates October 14-16th. no other entries besides those. 5 full pages