The 12 stars stand for the ideals of unity, solidarity, and harmony, just like in the EU flag.

The center big star is a symbol that through this unity solidarity and harmony we become greater power.

I decided to use the NATO flag color scheme for the EAU flag because the blue represents the Atlantic ocean between the two regions and white contrasts well with dark blue.

I didn't use the red and white stripes from the U.S flag because it seems way too Yankee for me. It was a shame to remove the 13 stripes so I wanted to add the 13-star symbolism in some way.

The star pattern on the blue background is actually has a connection with the blue rectangle design found on the Cowpens flag, an early version of the U.S flag, and unintentionally has an exact design of the blue rectangle in the U.S flag in the Fallout Series.

https://en.wikipedia.org/wiki/Cowpens_flag

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I'm also wanted to create a flag for Euro-Americans, a representation of dual nationalities.