Flag of the Southron Union. Basically a surviving CSA that after abolitionism and other civil rights still collapsed duo to how the country itself is organised.
Instead of establishing a "Second Confederated States" that either counts as the same state or an official successor state, the people decided to dump the Confederate system itself and establish a new union based on the common "Southron" identity that developed. That included a flag that represented all people (except the future Hispanic third pillar that at that time was still rather small and ignored) So the Southron Union was established. A federal republic based on the former states of the CSA.
It's stereotypes in the modern day includes being very ethnically diverse, being half way Spanish and English (especially after Spanish was declared the second official language), being very,
VERY Christian, with some rather weird cults, it's people being very proud of it's guns and government being pretty weak, it's almost total free capitalist system, still being pretty anti LGBTQ (hard core Dixie Christianity doesn't mix well, who would have guessed) and not being really industrial people.
The Southron Union is rather isolationist outside of the Americas. It holds in general good relations with the rest of the Americas. The relations with the US though can't be called brotherly, with both sides (especially the South) rather ignoring their connected pre Civil War history. Especially the US doesn't see them anymore as their brothers.
Ironically enough without any big minorities in the remaining US, the US remained rather White centered. So the South is seen as too Black and Hispanic for their ethnic taste and too Christian and libertarian for the decade long Social Democratic winged US.
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(BTW, the flag itself is based on Rhodesia-Zimbabwe)