Economist Intelligence Unit (EIU) country reports are no longer included in Business Source Premier. EBSCO cites prohibitive cost as the main factor in deciding to not renew their contract with EIU.
If classes in your school are participating in History Day, then likely they are in the thick of it. Topic refining, background research, library visits, and the hunt for primary resources are, in my experience, some of the typical activities. While your students are researching their History Day