The United States government is a first world super-power - some of its actions in the past have greatly affected the world today and they continue to do so over-time.
These posters lend themselves to being around other historical images and photographs - a copy of the Declaration of Independence would fit right in ext to the Bill of Rights or the actual signing of the Declaration.
Most of these posters are darker in tone, or old black and white photographs; some are stylized in appearance, but most will do better next to things that provide a kind contest to the old hues of older photos, to the brush-strokes of an artist's work or to the printed words of important historical documents.
