i have heard that this question on the age of exploration hasn't come up in years. Do i need to learn it
I think it's always best to learn of as much essays as you can because you never know what might come up on the exam.
Try Learning Ferdinand Magellan. It's short but gets yu all the marks you need. Its just a matter of learning it off by heart.
Basically learn all the essays except the ones that came up last year. Although you still should be familiar with all the topics for the other questions on the paper