According to the guide, the topic should be related to a current issue such as terrorism (which is the main topic of my EE), migration, energy security, etc. As the EE Guide suggests, one must have global awareness. Which consists of: > global sensitivityâ€”a sensitivity to local phenomena and experiences as manifestations of broader developments on the planetâ€¢ global understandingâ€”the capacity to think in flexible and informed ways about issues of global significanceâ€¢ global selfâ€”a developing perception of self as a global actor and member of humanity, capable of making a positive contribution to the world. "An extended essay in world studies is expected to show that the student possesses a knowledge and understanding of relevant theories, research methods, or findings in the selected IB Diploma Programme subjects." (also quoted from guide) keep these in mind while working on your essay! As for the primary data collection, it apparently is required in every EE subject.