There are several ways of doing this assignment, however, I treated it as a group research/presentation project. Groups were assigned one of the countries on the chart and asked to research the topic. They took notes and presented their findings using a small poster. Groups presented their findings to the class, while the audience added to the graphic organizer.
It can also be done independently, in pairs or in groups entirely. As a country is covered, it can be added to as an ongoing assignment/notes sheet.