Test your knowledge of South Africa, from its apartheid era to its economic heft.

Test your knowledge of South Sudan, from its battle for independence to its economic development.

Test your knowledge of the roles foreign countries played in the U.S. civil war, from France to Brazil. 

Test your knowledge of Japan, from its postwar alliances to its territorial disputes.

Test your knowledge of nuclear arms control and nonproliferation, from international treaties to diplomatic forums.