I appreciate this comment, and agree with it in some respects, but some of these specifics are demonstrably false.

> It's the nation born of a continent-wide campaign of genocide and plunder

Hard to see how that description doesn't apply to most of the New World. Mexico and Peru were founded on bones of conquered and plundered empires. First Nations in Canada suffered much the same as their counterparts in the US.

> It's the only Western nation that couldn't give up slavery without a civil war.

I'm not knowledgeable enough to say this is literally false, but the implication that every other nation gave up slavery willingly and without violence certainly is (see Haiti, for a particularly bloody example)