As far as US history is concerned, I can make a case for this.
As Diana suggested in a now-defunct predecessor of the workshop, Thomas Jefferson was EII rather than LII. His vision of the United States was of a loose union of Delta-ish societies and economies like his own Virginia. However, the vision of the Gammas George Washington (ESI) and Alexander Hamilton (LIE) prevailed. Rather than a loose Delta governmental structure, the US became a more Gamma structure, adapted from the still-Beta-ish British constitutional monarchy of the time (which was actually Beta/Gamma).
Ironically, however, it was left to the EII Abraham Lincoln to totally eliminate the idea of a Delta US, with the Civil War - which, I would argue, could be seen as a Gamma/Delta conflict.
That is not to say that Delta was typically pro-slavery. I think they saw slavery as part of the
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- as a tool to keep the existing economic prosperity. Slaves were not included in the
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. They "did not count". Pretty much like they did not count for the slave-owner, EII Thomas Jefferson when he wrote about the "self-evident truths".