Part 1 of Essay
There were many political and technological changes that prompted the world explorations and . The Portuguese were the main contributors to the technological changes that lead to the . However, the change of the political structure of Spain ultimately lead to the discovery. There were many technological changes that the ....

Part 2 of Essay
.... that were in war with each other needed to "pull alongside" the other vessel and board them to fight. With the cannons on deck, this was no longer necessary. The Portuguese could stay a safe distance away from the enemy vessel and shoot the cannons at them. The political changes in Spain had the most dramatic effect on the . It started when Princess Isabella of Castile wed Prince Ferdinand of Aragon. When they were wed, they formed the kingdom of Spain. Princess Isabella and Prince Ferdinand finished their e ....