Which African country's flag has a red triangle at the hoist and two black stars on a yellow horizontal band?

The African country's flag with a red hoist triangle and two black stars on a yellow band is São Tomé and Príncipe.

The flag is a green-yellow-green horizontal triband. A red isosceles triangle points inward from the hoist, and the central yellow band carries two five-pointed black stars. It was adopted on 12 July 1975, when the island nation became independent from Portugal.

The design closely follows the first flag of the Movement for the Liberation of São Tomé and Príncipe, or MLSTP. Manuel Pinto da Costa, who later became the country's first president, designed the national version. The two stars represent the country's two main islands, São Tomé and Príncipe.

The colors are part of the Pan-African tradition, while official interpretations also connect the triangle with equality and the independence movement. Cape Verde and Guinea-Bissau can cause confusion because they are also former Portuguese colonies whose flags use related colors and a black star. The pair of stars is the key distinguishing feature here.