If the red on the US flag means blood what does blood mean on that?

Answer:
Charles Thompson, Secretary of the Continental Congress, reporting to Congress on the Seal,
Stated;


"The colors of the pales ( the vertical stripes ) are those used in the flag of the United States of America; White signifies purity and innocence. Red, hardiness & valor and Blue, the color of the Chief ( the broad band above the stripes ) signifies vigilance, perseverance &
Justice"
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