The  Republic of Congo Flag
 
Flag Description:
divided diagonally from the lower hoist side by a yellow band; the upper triangle (hoist side) is green and the lower triangle is red; green symbolizes agriculture and forests, yellow the friendship and nobility of the people, red is unexplained but has been associated with the struggle for independence uses the popular Pan-African colors of Ethiopia
note: uses the popular Pan-African colors of Ethiopia

 

 

 

 

Source: CIA The World Factbook