There was a sudden urge in exploration because...
- The explorers wanted to save lives
- They wanted to become wealthy
- They also wanted to spread Christianity
- And they had a sense of adventure.
- Astrolabe- a portable device used by the sailors to find their way
- Shipbuilding- these ships were powered by sails rather than rowing
- Maps- maps were more updated and more accurate
- Magnetic Compass- was improved from the original compass