The US clearly was complicit in slavery, but Europe has a bad habit of propping itself up as morally, culturally, and intellectually superior to the US - and slavery has been one of their talking points. Actually, when looking at the Louisiana Purchase, the elephant in the room is that France sold off Native American lands that they had no right to. Much of what was sold was not controlled in any meaningful way by the French - but that didn’t keep them from selling it (or us from buying it).
To me, the most important lesson when looking at the history of the world is that it is replete with human aggression against humans - and with the arrogance of perceived superiority based upon pedigree. The US, for all of its flaws, remains the most important and successful nation to recognize the rights of individuals and that these rights are ordained by God - not granted by a governing body. The left has been waging an incessant battle against those ordained rights.

Boom.
Exactly. But we as Americans in our stupidity we defend the Europeans and take on a guilt for something we didn't even do.
The U.S. was founded in 1776. We cannot possibly be guilty for 1775 or any year prior. It cannot be. Reality precludes it from ever being true.
The Louisiana Purchase was 1803. We cannot possibly be guilty for 1802 or any year prior. It just simply cannot.
It's simple math. Now I know math is racist for some people out there but that's the fact. Its simple math. And its a simple calendar. We can all see it.