The three statements that support the idea that South America is a single cultural region are:
- The Mardi Gras tradition is celebrated with grand parades in Argentina, Brazil, Colombia, and Uruguay.
- Many people in Chile, Argentina, Ecuador, and Peru practice Roman Catholicism.
- In most Latin American countries, the majority of locals speak Spanish.
These statements highlight shared cultural practices, religious beliefs, and linguistic characteristics that suggest a common cultural identity across different countries in South America.