Where in the world?
The flag of Botswana has a light blue field with a black horizontal stripe bordered by white in the center.

Botswana

Population: 2,351,625

Region: Africa

Subregion: Southern Africa

Capital: Gaborone

Top Level Domain: .bw

Currencies: Botswana pula

Border countries

The flag of Namibia has a diagonal tricolor of blue, red, and green with white fimbriations, and a gold sun with 12 triangular rays in the canton.

Namibia

Population: 2,540,916

Region: Africa

Capital: Windhoek
The flag of South Africa has a horizontal bicolor of red and blue with a green Y-shaped band edged in white and a black triangle on the left side.

South Africa

Population: 59,308,690

Region: Africa

Capital: Pretoria
The flag of Zambia has a green field with an orange eagle in flight over a rectangular block of three vertical stripes of red, black, and orange in the lower right corner.

Zambia

Population: 18,383,956

Region: Africa

Capital: Lusaka
The flag of Zimbabwe has seven even horizontal stripes of green, gold, red, and black with a white triangle containing a red five-pointed star with a Zimbabwe Bird.

Zimbabwe

Population: 14,862,927

Region: Africa

Capital: Harare