Where in the world?
The flag of Argentina has three horizontal bands of light blue, white, and light blue, with a yellow sun in the center of the white band.

Argentina

Population: 45,376,763

Region: Americas

Subregion: South America

Capital: Buenos Aires

Top Level Domain: .ar

Currencies: Argentine peso

Border countries

The flag of Bolivia has three horizontal bands of red, yellow, and green with the national coat of arms in the center.

Bolivia (Plurinational State of)

Population: 11,673,029

Region: Americas

Capital: Sucre
The flag of Brazil has a green field with a yellow diamond and a blue globe with stars in the center.

Brazil

Population: 212,559,409

Region: Americas

Capital: Brasília
The flag of Chile has three horizontal stripes of red, white, and blue with a white star in the center of the blue stripe.

Chile

Population: 19,116,209

Region: Americas

Capital: Santiago
The flag of Paraguay has three horizontal stripes of red, white, and blue with a national emblem in the center of the white stripe.

Paraguay

Population: 7,132,530

Region: Americas

Capital: Asunción
The flag of Uruguay has nine horizontal stripes of white and blue with a white square in the top left corner containing a yellow sun with a face.

Uruguay

Population: 3,473,727

Region: Americas

Capital: Montevideo