The Bahamas Flag
The Bahamas flag was adopted on July 10, 1973. The black equilateral triangle on the left represents the unity and determination of the people of the Bahamas.
The flag of the Bahamas has an approximate 1:2 aspect ratio. The triangle is oriented toward three equal-width stripes symbolizing areas of natural resource; two aquamarine stripes at the top and bottom of the flag representing the sea and one gold stripe representing the land. Wikipedia