Which South American country's name may mean "river which originates a sea" and is home to the Guaraní people?

Which Cuban religion combines elements of West African religion and Roman Catholicism?

Which area of Spain produces the largest number of "aceitunas"?

Which Central American Spanish-speaking country is home to square trees?

What is the name of this instrument that is commonly used in Mexican mariachi music?

Which Spanish speaking country has stoats living in it?

Which Spanish speaking country contains the world's largest salt flat?