Where in the world?
The flag of Togo has five horizontal stripes of green and yellow with a red square in the top left corner containing a white star.

Togo

Population: 8,278,737

Region: Africa

Subregion: Western Africa

Capital: Lomé

Top Level Domain: .tg

Currencies: West African CFA franc

Border countries

The flag of Benin has two horizontal bands of yellow and red with a green vertical band on the hoist side.

Benin

Population: 12,123,198

Region: Africa

Capital: Porto-Novo
The flag of Burkina Faso has two horizontal stripes of red and green with a yellow five-pointed star in the center.

Burkina Faso

Population: 20,903,278

Region: Africa

Capital: Ouagadougou
The flag of Ghana has three horizontal stripes of red, yellow, and green, with a black five-pointed star in the center of the yellow stripe.

Ghana

Population: 31,072,945

Region: Africa

Capital: Accra