Test your knowledge of international organizations and treaties, including the European Union and the World Trade Organization.

Test your knowledge of international organizations and treaties, including long-standing defense alliances and the United Nations.

Test your knowledge of noncommunicable diseases and health in the developing world, from conditions such as Alzheimer’s and diabetes to global efforts to end HIV/AIDS.

Test your knowledge of World War I, from the Battle of the Somme to the Armistice.

Test your knowledge of China’s role in the world, from its infrastructure initiative spanning several continents to its trade with other countries.