Final answer:
The white banner in the painting represents the flag of the United States of America (USA).
Step-by-step explanation:
The white banner in the painting represents the flag of the United States of America (USA).
Based on the description provided, the painting being referred to is 'Figure 4.6.17: Three Flags' by Gandalf's Gallery. The painting is part of an encaustic flag series by the artist. Although the painting does not use the traditional red, white, and blue colors of the American flag, it still presents an image of America.
Johns created this ghostlike and faded image of the flag using a mixture of different light pigments mixed with wax, with deep dripping brush strokes defining the symbolic view of the stars and stripes.